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Commit f7bcd2e1 authored by Karen Xie's avatar Karen Xie Committed by David S. Miller
Browse files

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: default avatarKaren Xie <kxie@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 928567ad

drivers/scsi/cxgbi/cxgb4i/cxgb4i.c

+22 −0
Original line number Diff line number Diff line
@@ -1037,6 +1037,27 @@ static void do_abort_rpl_rss(struct cxgbi_device *cdev, struct sk_buff *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)