Author: jhb
Date: Wed Jan 24 20:12:00 2018
New Revision: 328357
URL: https://svnweb.freebsd.org/changeset/base/328357
Log:
Fail crypto requests when the resulting work request is too large.
Most crypto requests will not trigger this condition, but a request
with a highly-fragmented data buffer (and a resulting "large" S/G
list) could trigger it.
Sponsored by: Chelsio Communications
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 Wed Jan 24 20:11:00 2018
(r328356)
+++ head/sys/dev/cxgbe/crypto/t4_crypto.c Wed Jan 24 20:12:00 2018
(r328357)
@@ -470,6 +470,8 @@ ccr_hmac(struct ccr_softc *sc, uint32_t sid, struct cc
}
wr_len = roundup2(transhdr_len, 16) + roundup2(imm_len, 16) + sgl_len;
+ if (wr_len > SGE_MAX_WR_LEN)
+ return (EFBIG);
wr = alloc_wrqe(wr_len, sc->txq);
if (wr == NULL) {
sc->stats_wr_nomem++;
@@ -626,6 +628,8 @@ ccr_blkcipher(struct ccr_softc *sc, uint32_t sid, stru
wr_len = roundup2(transhdr_len, 16) + s->blkcipher.iv_len +
roundup2(imm_len, 16) + sgl_len;
+ if (wr_len > SGE_MAX_WR_LEN)
+ return (EFBIG);
wr = alloc_wrqe(wr_len, sc->txq);
if (wr == NULL) {
sc->stats_wr_nomem++;
@@ -947,6 +951,8 @@ ccr_authenc(struct ccr_softc *sc, uint32_t sid, struct
wr_len = roundup2(transhdr_len, 16) + s->blkcipher.iv_len +
roundup2(imm_len, 16) + sgl_len;
+ if (wr_len > SGE_MAX_WR_LEN)
+ return (EFBIG);
wr = alloc_wrqe(wr_len, sc->txq);
if (wr == NULL) {
sc->stats_wr_nomem++;
@@ -1256,6 +1262,8 @@ ccr_gcm(struct ccr_softc *sc, uint32_t sid, struct ccr
wr_len = roundup2(transhdr_len, 16) + iv_len + roundup2(imm_len, 16) +
sgl_len;
+ if (wr_len > SGE_MAX_WR_LEN)
+ return (EFBIG);
wr = alloc_wrqe(wr_len, sc->txq);
if (wr == NULL) {
sc->stats_wr_nomem++;
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