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scsi: cxgb4i: libcxgbi: in error case RST tcp conn
If logout response is not received and ->ep_disconnect() is called then close tcp conn by RST instead of FIN to cleanup conn resources immediately. Also move ->csk_push_tx_frames() above 'done:' to avoid calling ->csk_push_tx_frames() in error cases. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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parent
70bdf2026d
commit
e0f8e8cf3b
3 changed files with 23 additions and 8 deletions
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@ -1595,7 +1595,6 @@ static void release_offload_resources(struct cxgbi_sock *csk)
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cxgbi_sock_put(csk);
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}
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csk->dst = NULL;
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csk->cdev = NULL;
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}
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static int init_act_open(struct cxgbi_sock *csk)
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@ -867,7 +867,8 @@ static void need_active_close(struct cxgbi_sock *csk)
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log_debug(1 << CXGBI_DBG_SOCK, "csk 0x%p,%u,0x%lx,%u.\n",
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csk, (csk)->state, (csk)->flags, (csk)->tid);
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spin_lock_bh(&csk->lock);
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dst_confirm(csk->dst);
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if (csk->dst)
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dst_confirm(csk->dst);
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data_lost = skb_queue_len(&csk->receive_queue);
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__skb_queue_purge(&csk->receive_queue);
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@ -882,7 +883,8 @@ static void need_active_close(struct cxgbi_sock *csk)
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}
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if (close_req) {
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if (data_lost)
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if (!cxgbi_sock_flag(csk, CTPF_LOGOUT_RSP_RCVD) ||
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data_lost)
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csk->cdev->csk_send_abort_req(csk);
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else
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csk->cdev->csk_send_close_req(csk);
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@ -1186,9 +1188,10 @@ static int cxgbi_sock_send_pdus(struct cxgbi_sock *csk, struct sk_buff *skb)
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cxgbi_ulp_extra_len(cxgbi_skcb_ulp_mode(skb));
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skb = next;
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}
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done:
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if (likely(skb_queue_len(&csk->write_queue)))
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cdev->csk_push_tx_frames(csk, 1);
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done:
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spin_unlock_bh(&csk->lock);
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return copied;
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@ -1568,9 +1571,12 @@ static inline int read_pdu_skb(struct iscsi_conn *conn,
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}
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}
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static int skb_read_pdu_bhs(struct iscsi_conn *conn, struct sk_buff *skb)
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static int
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skb_read_pdu_bhs(struct cxgbi_sock *csk, struct iscsi_conn *conn,
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struct sk_buff *skb)
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{
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struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
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int err;
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log_debug(1 << CXGBI_DBG_PDU_RX,
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"conn 0x%p, skb 0x%p, len %u, flag 0x%lx.\n",
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@ -1608,7 +1614,16 @@ static int skb_read_pdu_bhs(struct iscsi_conn *conn, struct sk_buff *skb)
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}
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}
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return read_pdu_skb(conn, skb, 0, 0);
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err = read_pdu_skb(conn, skb, 0, 0);
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if (likely(err >= 0)) {
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struct iscsi_hdr *hdr = (struct iscsi_hdr *)skb->data;
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u8 opcode = hdr->opcode & ISCSI_OPCODE_MASK;
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if (unlikely(opcode == ISCSI_OP_LOGOUT_RSP))
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cxgbi_sock_set_flag(csk, CTPF_LOGOUT_RSP_RCVD);
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}
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return err;
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}
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static int skb_read_pdu_data(struct iscsi_conn *conn, struct sk_buff *lskb,
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@ -1713,7 +1728,7 @@ void cxgbi_conn_pdu_ready(struct cxgbi_sock *csk)
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cxgbi_skcb_rx_pdulen(skb));
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if (cxgbi_skcb_test_flag(skb, SKCBF_RX_COALESCED)) {
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err = skb_read_pdu_bhs(conn, skb);
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err = skb_read_pdu_bhs(csk, conn, skb);
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if (err < 0) {
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pr_err("coalesced bhs, csk 0x%p, skb 0x%p,%u, "
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"f 0x%lx, plen %u.\n",
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@ -1731,7 +1746,7 @@ void cxgbi_conn_pdu_ready(struct cxgbi_sock *csk)
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cxgbi_skcb_flags(skb),
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cxgbi_skcb_rx_pdulen(skb));
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} else {
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err = skb_read_pdu_bhs(conn, skb);
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err = skb_read_pdu_bhs(csk, conn, skb);
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if (err < 0) {
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pr_err("bhs, csk 0x%p, skb 0x%p,%u, "
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"f 0x%lx, plen %u.\n",
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@ -187,6 +187,7 @@ enum cxgbi_sock_flags {
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CTPF_HAS_ATID, /* reserved atid */
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CTPF_HAS_TID, /* reserved hw tid */
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CTPF_OFFLOAD_DOWN, /* offload function off */
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CTPF_LOGOUT_RSP_RCVD, /* received logout response */
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};
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struct cxgbi_skb_rx_cb {
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