git: 8adcc757b82c - main - opencrypto: Add comments describing the new crypto_session layout

[Mark Johnston]

The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=8adcc757b82c9c80ad743a11292287cebdb6d6f9

commit 8adcc757b82c9c80ad743a11292287cebdb6d6f9
Author:     Mark Johnston <markj at FreeBSD.org>
AuthorDate: 2021-01-20 02:32:33 +0000
Commit:     Mark Johnston <markj at FreeBSD.org>
CommitDate: 2021-01-20 02:32:33 +0000

    opencrypto: Add comments describing the new crypto_session layout
    
    Requested by:   rpokala
---
 sys/opencrypto/crypto.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/opencrypto/crypto.c b/sys/opencrypto/crypto.c
index fc4169fb2365..0316eb35361a 100644
--- a/sys/opencrypto/crypto.c
+++ b/sys/opencrypto/crypto.c
@@ -136,6 +136,7 @@ struct crypto_session {
 	struct cryptocap *cap;
 	struct crypto_session_params csp;
 	uint64_t id;
+	/* Driver softc follows. */
 };
 
 /*
@@ -942,6 +943,7 @@ crypto_newsession(crypto_session_t *cses,
 	cap->cc_sessions++;
 	CRYPTO_DRIVER_UNLOCK();
 
+	/* Allocate a single block for the generic session and driver softc. */
 	res = malloc(sizeof(*res) + cap->cc_session_size, M_CRYPTO_DATA,
 	    M_WAITOK | M_ZERO);
 	res->cap = cap;