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nfp: add set ipv6 source and destination address

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Previously we did not have offloading support for set IPv6 actions. This
patch enables TC flower offload of set IPv6 src and dst address actions.

Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pieter Jansen van Vuuren 2017-10-06 10:21:25 +02:00 committed by David S. Miller
parent c0b1bd9a8b
commit 354b82bb32
2 changed files with 83 additions and 0 deletions
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72
drivers/net/ethernet/netronome/nfp/flower/action.c
View file

@ -302,9 +302,55 @@ nfp_fl_set_ip4(const struct tc_action *action, int idx, u32 off,
return 0;
}
static void
nfp_fl_set_ip6_helper(int opcode_tag, int idx, __be32 exact, __be32 mask,
struct nfp_fl_set_ipv6_addr *ip6)
{
u16 tmp_set_op;
ip6->ipv6[idx % 4].mask = mask;
ip6->ipv6[idx % 4].exact = exact;
ip6->reserved = cpu_to_be16(0);
tmp_set_op = FIELD_PREP(NFP_FL_ACT_LEN_LW, sizeof(*ip6) >>
NFP_FL_LW_SIZ) |
FIELD_PREP(NFP_FL_ACT_JMP_ID, opcode_tag);
ip6->a_op = cpu_to_be16(tmp_set_op);
}
static int
nfp_fl_set_ip6(const struct tc_action *action, int idx, u32 off,
struct nfp_fl_set_ipv6_addr *ip_dst,
struct nfp_fl_set_ipv6_addr *ip_src)
{
__be32 exact, mask;
/* We are expecting tcf_pedit to return a big endian value */
mask = (__force __be32)~tcf_pedit_mask(action, idx);
exact = (__force __be32)tcf_pedit_val(action, idx);
if (exact & ~mask)
return -EOPNOTSUPP;
if (off < offsetof(struct ipv6hdr, saddr))
return -EOPNOTSUPP;
else if (off < offsetof(struct ipv6hdr, daddr))
nfp_fl_set_ip6_helper(NFP_FL_ACTION_OPCODE_SET_IPV6_SRC, idx,
exact, mask, ip_src);
else if (off < offsetof(struct ipv6hdr, daddr) +
sizeof(struct in6_addr))
nfp_fl_set_ip6_helper(NFP_FL_ACTION_OPCODE_SET_IPV6_DST, idx,
exact, mask, ip_dst);
else
return -EOPNOTSUPP;
return 0;
}
static int
nfp_fl_pedit(const struct tc_action *action, char *nfp_action, int *a_len)
{
struct nfp_fl_set_ipv6_addr set_ip6_dst, set_ip6_src;
struct nfp_fl_set_ip4_addrs set_ip_addr;
struct nfp_fl_set_eth set_eth;
enum pedit_header_type htype;
@ -312,6 +358,8 @@ nfp_fl_pedit(const struct tc_action *action, char *nfp_action, int *a_len)
size_t act_size;
u32 offset, cmd;
memset(&set_ip6_dst, 0, sizeof(set_ip6_dst));
memset(&set_ip6_src, 0, sizeof(set_ip6_src));
memset(&set_ip_addr, 0, sizeof(set_ip_addr));
memset(&set_eth, 0, sizeof(set_eth));
nkeys = tcf_pedit_nkeys(action);
@ -331,6 +379,10 @@ nfp_fl_pedit(const struct tc_action *action, char *nfp_action, int *a_len)
case TCA_PEDIT_KEY_EX_HDR_TYPE_IP4:
err = nfp_fl_set_ip4(action, idx, offset, &set_ip_addr);
break;
case TCA_PEDIT_KEY_EX_HDR_TYPE_IP6:
err = nfp_fl_set_ip6(action, idx, offset, &set_ip6_dst,
&set_ip6_src);
break;
default:
return -EOPNOTSUPP;
}
@ -346,6 +398,26 @@ nfp_fl_pedit(const struct tc_action *action, char *nfp_action, int *a_len)
act_size = sizeof(set_ip_addr);
memcpy(nfp_action, &set_ip_addr, act_size);
*a_len += act_size;
} else if (set_ip6_dst.a_op && set_ip6_src.a_op) {
/* TC compiles set src and dst IPv6 address as a single action,
* the hardware requires this to be 2 separate actions.
*/
act_size = sizeof(set_ip6_src);
memcpy(nfp_action, &set_ip6_src, act_size);
*a_len += act_size;
act_size = sizeof(set_ip6_dst);
memcpy(&nfp_action[sizeof(set_ip6_src)], &set_ip6_dst,
act_size);
*a_len += act_size;
} else if (set_ip6_dst.a_op) {
act_size = sizeof(set_ip6_dst);
memcpy(nfp_action, &set_ip6_dst, act_size);
*a_len += act_size;
} else if (set_ip6_src.a_op) {
act_size = sizeof(set_ip6_src);
memcpy(nfp_action, &set_ip6_src, act_size);
*a_len += act_size;
}
return 0;

11
drivers/net/ethernet/netronome/nfp/flower/cmsg.h
View file

@ -79,6 +79,8 @@
#define NFP_FL_ACTION_OPCODE_SET_IPV4_TUNNEL 6
#define NFP_FL_ACTION_OPCODE_SET_ETHERNET 7
#define NFP_FL_ACTION_OPCODE_SET_IPV4_ADDRS 9
#define NFP_FL_ACTION_OPCODE_SET_IPV6_SRC 11
#define NFP_FL_ACTION_OPCODE_SET_IPV6_DST 12
#define NFP_FL_ACTION_OPCODE_PRE_TUNNEL 17
#define NFP_FL_ACTION_OPCODE_NUM 32
@ -125,6 +127,15 @@ struct nfp_fl_set_ip4_addrs {
__be32 ipv4_dst;
};
struct nfp_fl_set_ipv6_addr {
__be16 a_op;
__be16 reserved;
struct {
__be32 mask;
__be32 exact;
} ipv6[4];
};
struct nfp_fl_output {
__be16 a_op;
__be16 flags;