ch_ktls: do not send snd_una update to TCB in middle

snd_una update should not be done when the same skb is being
sent out.chcr_short_record_handler() sends it again even
though SND_UNA update is already sent for the skb in
chcr_ktls_xmit(), which causes mismatch in un-acked
TCP seq number, later causes problem in sending out
complete record.

Fixes: 429765a149f1 ("chcr: handle partial end part of a record")
Signed-off-by: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c
index 8559eec..a3f5b80 100644 (file)
--- a/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c
@@ -1644,54 +1644,6 @@ static void chcr_ktls_copy_record_in_skb(struct sk_buff *nskb,
        refcount_add(nskb->truesize, &nskb->sk->sk_wmem_alloc);
 }
 
-/*
- * chcr_ktls_update_snd_una:  Reset the SEND_UNA. It will be done to avoid
- * sending the same segment again. It will discard the segment which is before
- * the current tx max.
- * @tx_info - driver specific tls info.
- * @q - TX queue.
- * return: NET_TX_OK/NET_XMIT_DROP.
- */
-static int chcr_ktls_update_snd_una(struct chcr_ktls_info *tx_info,
-                                   struct sge_eth_txq *q)
-{
-       struct fw_ulptx_wr *wr;
-       unsigned int ndesc;
-       int credits;
-       void *pos;
-       u32 len;
-
-       len = sizeof(*wr) + roundup(CHCR_SET_TCB_FIELD_LEN, 16);
-       ndesc = DIV_ROUND_UP(len, 64);
-
-       credits = chcr_txq_avail(&q->q) - ndesc;
-       if (unlikely(credits < 0)) {
-               chcr_eth_txq_stop(q);
-               return NETDEV_TX_BUSY;
-       }
-
-       pos = &q->q.desc[q->q.pidx];
-
-       wr = pos;
-       /* ULPTX wr */
-       wr->op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR));
-       wr->cookie = 0;
-       /* fill len in wr field */
-       wr->flowid_len16 = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(len, 16)));
-
-       pos += sizeof(*wr);
-
-       pos = chcr_write_cpl_set_tcb_ulp(tx_info, q, tx_info->tid, pos,
-                                        TCB_SND_UNA_RAW_W,
-                                        TCB_SND_UNA_RAW_V(TCB_SND_UNA_RAW_M),
-                                        TCB_SND_UNA_RAW_V(0), 0);
-
-       chcr_txq_advance(&q->q, ndesc);
-       cxgb4_ring_tx_db(tx_info->adap, &q->q, ndesc);
-
-       return 0;
-}
-
 /*
  * chcr_end_part_handler: This handler will handle the record which
  * is complete or if record's end part is received. T6 adapter has a issue that
@@ -1892,11 +1844,6 @@ static int chcr_short_record_handler(struct chcr_ktls_info *tx_info,
                        /* reset tcp_seq as per the prior_data_required len */
                        tcp_seq -= prior_data_len;
                }
-               /* reset snd una, so the middle record won't send the already
-                * sent part.
-                */
-               if (chcr_ktls_update_snd_una(tx_info, q))
-                       goto out;
                atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_middle_pkts);
        } else {
                atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_start_pkts);