svn commit: r366269 - head/sys/dev/cxgbe/crypto
John Baldwin
jhb at FreeBSD.org
Tue Sep 29 21:51:33 UTC 2020
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);
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