net: wangxun: libwx add rx offload functions
Add rx offload functions for wx_clean_rx_irq which supports ngbe and txgbe to implement rx offload function. Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Mengyuan Lou
Jakub Kicinski
parent
3403960cdf
commit
ef4f3c19f9
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@ -15,6 +15,144 @@
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#include "wx_lib.h"
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#include "wx_hw.h"
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/* Lookup table mapping the HW PTYPE to the bit field for decoding */
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static struct wx_dec_ptype wx_ptype_lookup[256] = {
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/* L2: mac */
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[0x11] = WX_PTT(L2, NONE, NONE, NONE, NONE, PAY2),
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[0x12] = WX_PTT(L2, NONE, NONE, NONE, TS, PAY2),
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[0x13] = WX_PTT(L2, NONE, NONE, NONE, NONE, PAY2),
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[0x14] = WX_PTT(L2, NONE, NONE, NONE, NONE, PAY2),
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[0x15] = WX_PTT(L2, NONE, NONE, NONE, NONE, NONE),
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[0x16] = WX_PTT(L2, NONE, NONE, NONE, NONE, PAY2),
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[0x17] = WX_PTT(L2, NONE, NONE, NONE, NONE, NONE),
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/* L2: ethertype filter */
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[0x18 ... 0x1F] = WX_PTT(L2, NONE, NONE, NONE, NONE, NONE),
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/* L3: ip non-tunnel */
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[0x21] = WX_PTT(IP, FGV4, NONE, NONE, NONE, PAY3),
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[0x22] = WX_PTT(IP, IPV4, NONE, NONE, NONE, PAY3),
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[0x23] = WX_PTT(IP, IPV4, NONE, NONE, UDP, PAY4),
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[0x24] = WX_PTT(IP, IPV4, NONE, NONE, TCP, PAY4),
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[0x25] = WX_PTT(IP, IPV4, NONE, NONE, SCTP, PAY4),
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[0x29] = WX_PTT(IP, FGV6, NONE, NONE, NONE, PAY3),
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[0x2A] = WX_PTT(IP, IPV6, NONE, NONE, NONE, PAY3),
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[0x2B] = WX_PTT(IP, IPV6, NONE, NONE, UDP, PAY3),
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[0x2C] = WX_PTT(IP, IPV6, NONE, NONE, TCP, PAY4),
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[0x2D] = WX_PTT(IP, IPV6, NONE, NONE, SCTP, PAY4),
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/* L2: fcoe */
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[0x30 ... 0x34] = WX_PTT(FCOE, NONE, NONE, NONE, NONE, PAY3),
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[0x38 ... 0x3C] = WX_PTT(FCOE, NONE, NONE, NONE, NONE, PAY3),
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/* IPv4 --> IPv4/IPv6 */
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[0x81] = WX_PTT(IP, IPV4, IPIP, FGV4, NONE, PAY3),
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[0x82] = WX_PTT(IP, IPV4, IPIP, IPV4, NONE, PAY3),
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[0x83] = WX_PTT(IP, IPV4, IPIP, IPV4, UDP, PAY4),
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[0x84] = WX_PTT(IP, IPV4, IPIP, IPV4, TCP, PAY4),
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[0x85] = WX_PTT(IP, IPV4, IPIP, IPV4, SCTP, PAY4),
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[0x89] = WX_PTT(IP, IPV4, IPIP, FGV6, NONE, PAY3),
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[0x8A] = WX_PTT(IP, IPV4, IPIP, IPV6, NONE, PAY3),
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[0x8B] = WX_PTT(IP, IPV4, IPIP, IPV6, UDP, PAY4),
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[0x8C] = WX_PTT(IP, IPV4, IPIP, IPV6, TCP, PAY4),
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[0x8D] = WX_PTT(IP, IPV4, IPIP, IPV6, SCTP, PAY4),
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/* IPv4 --> GRE/NAT --> NONE/IPv4/IPv6 */
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[0x90] = WX_PTT(IP, IPV4, IG, NONE, NONE, PAY3),
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[0x91] = WX_PTT(IP, IPV4, IG, FGV4, NONE, PAY3),
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[0x92] = WX_PTT(IP, IPV4, IG, IPV4, NONE, PAY3),
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[0x93] = WX_PTT(IP, IPV4, IG, IPV4, UDP, PAY4),
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[0x94] = WX_PTT(IP, IPV4, IG, IPV4, TCP, PAY4),
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[0x95] = WX_PTT(IP, IPV4, IG, IPV4, SCTP, PAY4),
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[0x99] = WX_PTT(IP, IPV4, IG, FGV6, NONE, PAY3),
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[0x9A] = WX_PTT(IP, IPV4, IG, IPV6, NONE, PAY3),
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[0x9B] = WX_PTT(IP, IPV4, IG, IPV6, UDP, PAY4),
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[0x9C] = WX_PTT(IP, IPV4, IG, IPV6, TCP, PAY4),
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[0x9D] = WX_PTT(IP, IPV4, IG, IPV6, SCTP, PAY4),
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/* IPv4 --> GRE/NAT --> MAC --> NONE/IPv4/IPv6 */
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[0xA0] = WX_PTT(IP, IPV4, IGM, NONE, NONE, PAY3),
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[0xA1] = WX_PTT(IP, IPV4, IGM, FGV4, NONE, PAY3),
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[0xA2] = WX_PTT(IP, IPV4, IGM, IPV4, NONE, PAY3),
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[0xA3] = WX_PTT(IP, IPV4, IGM, IPV4, UDP, PAY4),
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[0xA4] = WX_PTT(IP, IPV4, IGM, IPV4, TCP, PAY4),
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[0xA5] = WX_PTT(IP, IPV4, IGM, IPV4, SCTP, PAY4),
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[0xA9] = WX_PTT(IP, IPV4, IGM, FGV6, NONE, PAY3),
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[0xAA] = WX_PTT(IP, IPV4, IGM, IPV6, NONE, PAY3),
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[0xAB] = WX_PTT(IP, IPV4, IGM, IPV6, UDP, PAY4),
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[0xAC] = WX_PTT(IP, IPV4, IGM, IPV6, TCP, PAY4),
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[0xAD] = WX_PTT(IP, IPV4, IGM, IPV6, SCTP, PAY4),
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/* IPv4 --> GRE/NAT --> MAC+VLAN --> NONE/IPv4/IPv6 */
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[0xB0] = WX_PTT(IP, IPV4, IGMV, NONE, NONE, PAY3),
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[0xB1] = WX_PTT(IP, IPV4, IGMV, FGV4, NONE, PAY3),
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[0xB2] = WX_PTT(IP, IPV4, IGMV, IPV4, NONE, PAY3),
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[0xB3] = WX_PTT(IP, IPV4, IGMV, IPV4, UDP, PAY4),
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[0xB4] = WX_PTT(IP, IPV4, IGMV, IPV4, TCP, PAY4),
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[0xB5] = WX_PTT(IP, IPV4, IGMV, IPV4, SCTP, PAY4),
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[0xB9] = WX_PTT(IP, IPV4, IGMV, FGV6, NONE, PAY3),
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[0xBA] = WX_PTT(IP, IPV4, IGMV, IPV6, NONE, PAY3),
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[0xBB] = WX_PTT(IP, IPV4, IGMV, IPV6, UDP, PAY4),
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[0xBC] = WX_PTT(IP, IPV4, IGMV, IPV6, TCP, PAY4),
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[0xBD] = WX_PTT(IP, IPV4, IGMV, IPV6, SCTP, PAY4),
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/* IPv6 --> IPv4/IPv6 */
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[0xC1] = WX_PTT(IP, IPV6, IPIP, FGV4, NONE, PAY3),
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[0xC2] = WX_PTT(IP, IPV6, IPIP, IPV4, NONE, PAY3),
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[0xC3] = WX_PTT(IP, IPV6, IPIP, IPV4, UDP, PAY4),
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[0xC4] = WX_PTT(IP, IPV6, IPIP, IPV4, TCP, PAY4),
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[0xC5] = WX_PTT(IP, IPV6, IPIP, IPV4, SCTP, PAY4),
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[0xC9] = WX_PTT(IP, IPV6, IPIP, FGV6, NONE, PAY3),
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[0xCA] = WX_PTT(IP, IPV6, IPIP, IPV6, NONE, PAY3),
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[0xCB] = WX_PTT(IP, IPV6, IPIP, IPV6, UDP, PAY4),
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[0xCC] = WX_PTT(IP, IPV6, IPIP, IPV6, TCP, PAY4),
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[0xCD] = WX_PTT(IP, IPV6, IPIP, IPV6, SCTP, PAY4),
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/* IPv6 --> GRE/NAT -> NONE/IPv4/IPv6 */
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[0xD0] = WX_PTT(IP, IPV6, IG, NONE, NONE, PAY3),
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[0xD1] = WX_PTT(IP, IPV6, IG, FGV4, NONE, PAY3),
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[0xD2] = WX_PTT(IP, IPV6, IG, IPV4, NONE, PAY3),
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[0xD3] = WX_PTT(IP, IPV6, IG, IPV4, UDP, PAY4),
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[0xD4] = WX_PTT(IP, IPV6, IG, IPV4, TCP, PAY4),
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[0xD5] = WX_PTT(IP, IPV6, IG, IPV4, SCTP, PAY4),
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[0xD9] = WX_PTT(IP, IPV6, IG, FGV6, NONE, PAY3),
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[0xDA] = WX_PTT(IP, IPV6, IG, IPV6, NONE, PAY3),
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[0xDB] = WX_PTT(IP, IPV6, IG, IPV6, UDP, PAY4),
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[0xDC] = WX_PTT(IP, IPV6, IG, IPV6, TCP, PAY4),
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[0xDD] = WX_PTT(IP, IPV6, IG, IPV6, SCTP, PAY4),
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/* IPv6 --> GRE/NAT -> MAC -> NONE/IPv4/IPv6 */
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[0xE0] = WX_PTT(IP, IPV6, IGM, NONE, NONE, PAY3),
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[0xE1] = WX_PTT(IP, IPV6, IGM, FGV4, NONE, PAY3),
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[0xE2] = WX_PTT(IP, IPV6, IGM, IPV4, NONE, PAY3),
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[0xE3] = WX_PTT(IP, IPV6, IGM, IPV4, UDP, PAY4),
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[0xE4] = WX_PTT(IP, IPV6, IGM, IPV4, TCP, PAY4),
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[0xE5] = WX_PTT(IP, IPV6, IGM, IPV4, SCTP, PAY4),
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[0xE9] = WX_PTT(IP, IPV6, IGM, FGV6, NONE, PAY3),
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[0xEA] = WX_PTT(IP, IPV6, IGM, IPV6, NONE, PAY3),
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[0xEB] = WX_PTT(IP, IPV6, IGM, IPV6, UDP, PAY4),
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[0xEC] = WX_PTT(IP, IPV6, IGM, IPV6, TCP, PAY4),
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[0xED] = WX_PTT(IP, IPV6, IGM, IPV6, SCTP, PAY4),
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/* IPv6 --> GRE/NAT -> MAC--> NONE/IPv */
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[0xF0] = WX_PTT(IP, IPV6, IGMV, NONE, NONE, PAY3),
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[0xF1] = WX_PTT(IP, IPV6, IGMV, FGV4, NONE, PAY3),
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[0xF2] = WX_PTT(IP, IPV6, IGMV, IPV4, NONE, PAY3),
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[0xF3] = WX_PTT(IP, IPV6, IGMV, IPV4, UDP, PAY4),
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[0xF4] = WX_PTT(IP, IPV6, IGMV, IPV4, TCP, PAY4),
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[0xF5] = WX_PTT(IP, IPV6, IGMV, IPV4, SCTP, PAY4),
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[0xF9] = WX_PTT(IP, IPV6, IGMV, FGV6, NONE, PAY3),
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[0xFA] = WX_PTT(IP, IPV6, IGMV, IPV6, NONE, PAY3),
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[0xFB] = WX_PTT(IP, IPV6, IGMV, IPV6, UDP, PAY4),
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[0xFC] = WX_PTT(IP, IPV6, IGMV, IPV6, TCP, PAY4),
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[0xFD] = WX_PTT(IP, IPV6, IGMV, IPV6, SCTP, PAY4),
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};
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static struct wx_dec_ptype wx_decode_ptype(const u8 ptype)
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{
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return wx_ptype_lookup[ptype];
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}
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/* wx_test_staterr - tests bits in Rx descriptor status and error fields */
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static __le32 wx_test_staterr(union wx_rx_desc *rx_desc,
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const u32 stat_err_bits)
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@ -424,6 +562,98 @@ static bool wx_cleanup_headers(struct wx_ring *rx_ring,
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return false;
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}
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static void wx_rx_hash(struct wx_ring *ring,
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union wx_rx_desc *rx_desc,
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struct sk_buff *skb)
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{
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u16 rss_type;
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if (!(ring->netdev->features & NETIF_F_RXHASH))
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return;
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rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) &
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WX_RXD_RSSTYPE_MASK;
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if (!rss_type)
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return;
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skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss),
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(WX_RSS_L4_TYPES_MASK & (1ul << rss_type)) ?
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PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3);
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}
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/**
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* wx_rx_checksum - indicate in skb if hw indicated a good cksum
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* @ring: structure containing ring specific data
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* @rx_desc: current Rx descriptor being processed
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* @skb: skb currently being received and modified
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**/
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static void wx_rx_checksum(struct wx_ring *ring,
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union wx_rx_desc *rx_desc,
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struct sk_buff *skb)
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{
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struct wx_dec_ptype dptype = wx_decode_ptype(WX_RXD_PKTTYPE(rx_desc));
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skb_checksum_none_assert(skb);
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/* Rx csum disabled */
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if (!(ring->netdev->features & NETIF_F_RXCSUM))
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return;
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/* if IPv4 header checksum error */
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if ((wx_test_staterr(rx_desc, WX_RXD_STAT_IPCS) &&
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wx_test_staterr(rx_desc, WX_RXD_ERR_IPE)) ||
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(wx_test_staterr(rx_desc, WX_RXD_STAT_OUTERIPCS) &&
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wx_test_staterr(rx_desc, WX_RXD_ERR_OUTERIPER))) {
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ring->rx_stats.csum_err++;
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return;
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}
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/* L4 checksum offload flag must set for the below code to work */
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if (!wx_test_staterr(rx_desc, WX_RXD_STAT_L4CS))
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return;
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/* Hardware can't guarantee csum if IPv6 Dest Header found */
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if (dptype.prot != WX_DEC_PTYPE_PROT_SCTP && WX_RXD_IPV6EX(rx_desc))
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return;
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/* if L4 checksum error */
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if (wx_test_staterr(rx_desc, WX_RXD_ERR_TCPE)) {
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ring->rx_stats.csum_err++;
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return;
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}
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/* It must be a TCP or UDP or SCTP packet with a valid checksum */
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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/* If there is an outer header present that might contain a checksum
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* we need to bump the checksum level by 1 to reflect the fact that
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* we are indicating we validated the inner checksum.
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*/
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if (dptype.etype >= WX_DEC_PTYPE_ETYPE_IG)
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__skb_incr_checksum_unnecessary(skb);
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ring->rx_stats.csum_good_cnt++;
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}
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/**
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* wx_process_skb_fields - Populate skb header fields from Rx descriptor
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* @rx_ring: rx descriptor ring packet is being transacted on
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* @rx_desc: pointer to the EOP Rx descriptor
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* @skb: pointer to current skb being populated
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*
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* This function checks the ring, descriptor, and packet information in
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* order to populate the hash, checksum, protocol, and
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* other fields within the skb.
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**/
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static void wx_process_skb_fields(struct wx_ring *rx_ring,
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union wx_rx_desc *rx_desc,
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struct sk_buff *skb)
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{
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wx_rx_hash(rx_ring, rx_desc, skb);
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wx_rx_checksum(rx_ring, rx_desc, skb);
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skb_record_rx_queue(skb, rx_ring->queue_index);
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skb->protocol = eth_type_trans(skb, rx_ring->netdev);
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}
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/**
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* wx_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf
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* @q_vector: structure containing interrupt and ring information
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@ -491,8 +721,8 @@ static int wx_clean_rx_irq(struct wx_q_vector *q_vector,
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/* probably a little skewed due to removing CRC */
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total_rx_bytes += skb->len;
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skb_record_rx_queue(skb, rx_ring->queue_index);
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skb->protocol = eth_type_trans(skb, rx_ring->netdev);
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/* populate checksum, timestamp, VLAN, and protocol */
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wx_process_skb_fields(rx_ring, rx_desc, skb);
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napi_gro_receive(&q_vector->napi, skb);
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/* update budget accounting */
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@ -321,9 +321,31 @@
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/******************* Receive Descriptor bit definitions **********************/
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#define WX_RXD_STAT_DD BIT(0) /* Done */
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#define WX_RXD_STAT_EOP BIT(1) /* End of Packet */
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#define WX_RXD_STAT_L4CS BIT(7) /* L4 xsum calculated */
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#define WX_RXD_STAT_IPCS BIT(8) /* IP xsum calculated */
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#define WX_RXD_STAT_OUTERIPCS BIT(10) /* Cloud IP xsum calculated*/
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#define WX_RXD_ERR_OUTERIPER BIT(26) /* CRC IP Header error */
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#define WX_RXD_ERR_RXE BIT(29) /* Any MAC Error */
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#define WX_RXD_ERR_TCPE BIT(30) /* TCP/UDP Checksum Error */
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#define WX_RXD_ERR_IPE BIT(31) /* IP Checksum Error */
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/* RSS Hash results */
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#define WX_RXD_RSSTYPE_MASK GENMASK(3, 0)
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#define WX_RXD_RSSTYPE_IPV4_TCP 0x00000001U
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#define WX_RXD_RSSTYPE_IPV6_TCP 0x00000003U
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#define WX_RXD_RSSTYPE_IPV4_SCTP 0x00000004U
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#define WX_RXD_RSSTYPE_IPV6_SCTP 0x00000006U
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#define WX_RXD_RSSTYPE_IPV4_UDP 0x00000007U
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#define WX_RXD_RSSTYPE_IPV6_UDP 0x00000008U
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#define WX_RSS_L4_TYPES_MASK \
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((1ul << WX_RXD_RSSTYPE_IPV4_TCP) | \
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(1ul << WX_RXD_RSSTYPE_IPV4_UDP) | \
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(1ul << WX_RXD_RSSTYPE_IPV4_SCTP) | \
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(1ul << WX_RXD_RSSTYPE_IPV6_TCP) | \
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(1ul << WX_RXD_RSSTYPE_IPV6_UDP) | \
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(1ul << WX_RXD_RSSTYPE_IPV6_SCTP))
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/* TUN */
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#define WX_PTYPE_TUN_IPV4 0x80
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#define WX_PTYPE_TUN_IPV6 0xC0
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@ -347,6 +369,10 @@
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#define WX_PTYPE_TYP_TCP 0x04
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#define WX_PTYPE_TYP_SCTP 0x05
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||||
#define WX_RXD_PKTTYPE(_rxd) \
|
||||
((le32_to_cpu((_rxd)->wb.lower.lo_dword.data) >> 9) & 0xFF)
|
||||
#define WX_RXD_IPV6EX(_rxd) \
|
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((le32_to_cpu((_rxd)->wb.lower.lo_dword.data) >> 6) & 0x1)
|
||||
/*********************** Transmit Descriptor Config Masks ****************/
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||||
#define WX_TXD_STAT_DD BIT(0) /* Descriptor Done */
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||||
#define WX_TXD_DTYP_DATA 0 /* Adv Data Descriptor */
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||||
|
|
@ -398,6 +424,70 @@ enum wx_tx_flags {
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|||
#define WX_TX_FLAGS_VLAN_MASK GENMASK(31, 16)
|
||||
#define WX_TX_FLAGS_VLAN_SHIFT 16
|
||||
|
||||
/* wx_dec_ptype.mac: outer mac */
|
||||
enum wx_dec_ptype_mac {
|
||||
WX_DEC_PTYPE_MAC_IP = 0,
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||||
WX_DEC_PTYPE_MAC_L2 = 2,
|
||||
WX_DEC_PTYPE_MAC_FCOE = 3,
|
||||
};
|
||||
|
||||
/* wx_dec_ptype.[e]ip: outer&encaped ip */
|
||||
#define WX_DEC_PTYPE_IP_FRAG 0x4
|
||||
enum wx_dec_ptype_ip {
|
||||
WX_DEC_PTYPE_IP_NONE = 0,
|
||||
WX_DEC_PTYPE_IP_IPV4 = 1,
|
||||
WX_DEC_PTYPE_IP_IPV6 = 2,
|
||||
WX_DEC_PTYPE_IP_FGV4 = WX_DEC_PTYPE_IP_FRAG | WX_DEC_PTYPE_IP_IPV4,
|
||||
WX_DEC_PTYPE_IP_FGV6 = WX_DEC_PTYPE_IP_FRAG | WX_DEC_PTYPE_IP_IPV6,
|
||||
};
|
||||
|
||||
/* wx_dec_ptype.etype: encaped type */
|
||||
enum wx_dec_ptype_etype {
|
||||
WX_DEC_PTYPE_ETYPE_NONE = 0,
|
||||
WX_DEC_PTYPE_ETYPE_IPIP = 1, /* IP+IP */
|
||||
WX_DEC_PTYPE_ETYPE_IG = 2, /* IP+GRE */
|
||||
WX_DEC_PTYPE_ETYPE_IGM = 3, /* IP+GRE+MAC */
|
||||
WX_DEC_PTYPE_ETYPE_IGMV = 4, /* IP+GRE+MAC+VLAN */
|
||||
};
|
||||
|
||||
/* wx_dec_ptype.proto: payload proto */
|
||||
enum wx_dec_ptype_prot {
|
||||
WX_DEC_PTYPE_PROT_NONE = 0,
|
||||
WX_DEC_PTYPE_PROT_UDP = 1,
|
||||
WX_DEC_PTYPE_PROT_TCP = 2,
|
||||
WX_DEC_PTYPE_PROT_SCTP = 3,
|
||||
WX_DEC_PTYPE_PROT_ICMP = 4,
|
||||
WX_DEC_PTYPE_PROT_TS = 5, /* time sync */
|
||||
};
|
||||
|
||||
/* wx_dec_ptype.layer: payload layer */
|
||||
enum wx_dec_ptype_layer {
|
||||
WX_DEC_PTYPE_LAYER_NONE = 0,
|
||||
WX_DEC_PTYPE_LAYER_PAY2 = 1,
|
||||
WX_DEC_PTYPE_LAYER_PAY3 = 2,
|
||||
WX_DEC_PTYPE_LAYER_PAY4 = 3,
|
||||
};
|
||||
|
||||
struct wx_dec_ptype {
|
||||
u32 known:1;
|
||||
u32 mac:2; /* outer mac */
|
||||
u32 ip:3; /* outer ip*/
|
||||
u32 etype:3; /* encaped type */
|
||||
u32 eip:3; /* encaped ip */
|
||||
u32 prot:4; /* payload proto */
|
||||
u32 layer:3; /* payload layer */
|
||||
};
|
||||
|
||||
/* macro to make the table lines short */
|
||||
#define WX_PTT(mac, ip, etype, eip, proto, layer)\
|
||||
{1, \
|
||||
WX_DEC_PTYPE_MAC_##mac, /* mac */\
|
||||
WX_DEC_PTYPE_IP_##ip, /* ip */ \
|
||||
WX_DEC_PTYPE_ETYPE_##etype, /* etype */\
|
||||
WX_DEC_PTYPE_IP_##eip, /* eip */\
|
||||
WX_DEC_PTYPE_PROT_##proto, /* proto */\
|
||||
WX_DEC_PTYPE_LAYER_##layer /* layer */}
|
||||
|
||||
/* Host Interface Command Structures */
|
||||
struct wx_hic_hdr {
|
||||
u8 cmd;
|
||||
|
|
@ -620,6 +710,11 @@ struct wx_queue_stats {
|
|||
u64 bytes;
|
||||
};
|
||||
|
||||
struct wx_rx_queue_stats {
|
||||
u64 csum_good_cnt;
|
||||
u64 csum_err;
|
||||
};
|
||||
|
||||
/* iterator for handling rings in ring container */
|
||||
#define wx_for_each_ring(posm, headm) \
|
||||
for (posm = (headm).ring; posm; posm = posm->next)
|
||||
|
|
@ -661,6 +756,9 @@ struct wx_ring {
|
|||
|
||||
struct wx_queue_stats stats;
|
||||
struct u64_stats_sync syncp;
|
||||
union {
|
||||
struct wx_rx_queue_stats rx_stats;
|
||||
};
|
||||
} ____cacheline_internodealigned_in_smp;
|
||||
|
||||
struct wx_q_vector {
|
||||
|
|
|
|||
Loading…
Reference in New Issue