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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 <kxie@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Karen Xie 2014-12-11 19:13:41 -08:00 committed by David S. Miller
parent 928567ada4
commit f7bcd2e111
1 changed files with 22 additions and 0 deletions
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22
drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
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@ -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)