From f7bcd2e11107af39367fb726196f372f8ad05199 Mon Sep 17 00:00:00 2001 From: Karen Xie Date: Thu, 11 Dec 2014 19:13:41 -0800 Subject: [PATCH] cxgb4i: handle non-pdu-aligned rx data Abort the connection upon receiving of cpl_rx_data, which means the pdu cannot be recovered from the tcp stream. This generally is due to pdu header corruption. Signed-off-by: Karen Xie Signed-off-by: David S. Miller --- drivers/scsi/cxgbi/cxgb4i/cxgb4i.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c index 8ca91fdfdc35..8b7e8f815357 100644 --- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c +++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c @@ -1037,6 +1037,27 @@ rel_skb: __kfree_skb(skb); } +static void do_rx_data(struct cxgbi_device *cdev, struct sk_buff *skb) +{ + struct cxgbi_sock *csk; + struct cpl_rx_data *cpl = (struct cpl_rx_data *)skb->data; + unsigned int tid = GET_TID(cpl); + struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev); + struct tid_info *t = lldi->tids; + + csk = lookup_tid(t, tid); + if (!csk) { + pr_err("can't find connection for tid %u.\n", tid); + } else { + /* not expecting this, reset the connection. */ + pr_err("csk 0x%p, tid %u, rcv cpl_rx_data.\n", csk, tid); + spin_lock_bh(&csk->lock); + send_abort_req(csk); + spin_unlock_bh(&csk->lock); + } + __kfree_skb(skb); +} + static void do_rx_iscsi_hdr(struct cxgbi_device *cdev, struct sk_buff *skb) { struct cxgbi_sock *csk; @@ -1456,6 +1477,7 @@ cxgb4i_cplhandler_func cxgb4i_cplhandlers[NUM_CPL_CMDS] = { [CPL_SET_TCB_RPL] = do_set_tcb_rpl, [CPL_RX_DATA_DDP] = do_rx_data_ddp, [CPL_RX_ISCSI_DDP] = do_rx_data_ddp, + [CPL_RX_DATA] = do_rx_data, }; int cxgb4i_ofld_init(struct cxgbi_device *cdev) -- 2.20.1