svn commit: r366269 - head/sys/dev/cxgbe/crypto

[John Baldwin]

Author: jhb
Date: Tue Sep 29 21:51:32 2020
New Revision: 366269
URL: https://svnweb.freebsd.org/changeset/base/366269

Log:
  Fallback to software for more GCM and CCM requests.
  
  ccr(4) uses software to handle GCM and CCM requests not supported by
  the crypto engine (e.g. with only AAD and no payload).  This change
  adds a fallback for a few more requests such as those with more SGL
  entries than can fit in a work request (this can happen for GCM when
  decrypting a TLS record split across 15 or more packets).
  
  Reported by:	Chelsio QA
  Reviewed by:	np
  Sponsored by:	Chelsio Communications
  Differential Revision:	https://reviews.freebsd.org/D26582

Modified:
  head/sys/dev/cxgbe/crypto/t4_crypto.c

Modified: head/sys/dev/cxgbe/crypto/t4_crypto.c
==============================================================================
--- head/sys/dev/cxgbe/crypto/t4_crypto.c	Tue Sep 29 20:46:25 2020	(r366268)
+++ head/sys/dev/cxgbe/crypto/t4_crypto.c	Tue Sep 29 21:51:32 2020	(r366269)
@@ -2777,7 +2777,7 @@ ccr_process(device_t dev, struct cryptop *crp, int hin
 			return (0);
 		}
 		error = ccr_gcm(sc, s, crp);
-		if (error == EMSGSIZE) {
+		if (error == EMSGSIZE || error == EFBIG) {
 			counter_u64_add(sc->stats_sw_fallback, 1);
 			mtx_unlock(&s->lock);
 			ccr_gcm_soft(s, crp);
@@ -2796,7 +2796,7 @@ ccr_process(device_t dev, struct cryptop *crp, int hin
 			    csp->csp_cipher_klen);
 		}
 		error = ccr_ccm(sc, s, crp);
-		if (error == EMSGSIZE) {
+		if (error == EMSGSIZE || error == EFBIG) {
 			counter_u64_add(sc->stats_sw_fallback, 1);
 			mtx_unlock(&s->lock);
 			ccr_ccm_soft(s, crp);