crypto: chcr - small packet Tx stalls the queue

Immediate packets sent to hardware should include the work
request length in calculating the flits. WR occupy one flit and
if not accounted result in invalid request which stalls the HW
queue.

Cc: [email protected]
Signed-off-by: Atul Gupta <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

Author: chelsiocrypto

drivers/crypto/chelsio/chcr_ipsec.c

@@ -303,7 +303,10 @@ static bool chcr_ipsec_offload_ok(struct sk_buff *skb, struct xfrm_state *x)
 
 static inline int is_eth_imm(const struct sk_buff *skb, unsigned int kctx_len)
 {
-	int hdrlen = sizeof(struct chcr_ipsec_req) + kctx_len;
+	int hdrlen;
+
+	hdrlen = sizeof(struct fw_ulptx_wr) +
+		 sizeof(struct chcr_ipsec_req) + kctx_len;
 
 	hdrlen += sizeof(struct cpl_tx_pkt);
 	if (skb->len <= MAX_IMM_TX_PKT_LEN - hdrlen)