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authorFlorin Coras <fcoras@cisco.com>2023-09-30 15:21:08 -0700
committerDave Barach <vpp@barachs.net>2023-10-02 20:23:06 +0000
commitc1b038001e1f18effb3c9ff5daa9e9cac1cd66e8 (patch)
treea8b7ba93f803ad1bbb62b18b54c5fb57438af395 /src/plugins
parentd69ef3aeeb8b290917ce9e06d5f8f73da4268852 (diff)
tls: limit openssl engine max read burst
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ic7a8fd37d79fc9c09c8b1539d630f3b8983b8bb3
Diffstat (limited to 'src/plugins')
-rw-r--r--src/plugins/tlsopenssl/tls_openssl.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/src/plugins/tlsopenssl/tls_openssl.c b/src/plugins/tlsopenssl/tls_openssl.c
index 97b32bd405f..a3e93e1f588 100644
--- a/src/plugins/tlsopenssl/tls_openssl.c
+++ b/src/plugins/tlsopenssl/tls_openssl.c
@@ -163,7 +163,7 @@ openssl_lctx_get (u32 lctx_index)
return -1;
static int
-openssl_read_from_ssl_into_fifo (svm_fifo_t * f, SSL * ssl)
+openssl_read_from_ssl_into_fifo (svm_fifo_t *f, SSL *ssl, u32 max_len)
{
int read, rv, n_fs, i;
const int n_segs = 2;
@@ -174,6 +174,7 @@ openssl_read_from_ssl_into_fifo (svm_fifo_t * f, SSL * ssl)
if (!max_enq)
return 0;
+ max_enq = clib_min (max_len, max_enq);
n_fs = svm_fifo_provision_chunks (f, fs, n_segs, max_enq);
if (n_fs < 0)
return 0;
@@ -533,9 +534,10 @@ static inline int
openssl_ctx_read_tls (tls_ctx_t *ctx, session_t *tls_session)
{
openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
+ const u32 max_len = 128 << 10;
session_t *app_session;
- int read;
svm_fifo_t *f;
+ int read;
if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
{
@@ -549,7 +551,7 @@ openssl_ctx_read_tls (tls_ctx_t *ctx, session_t *tls_session)
app_session = session_get_from_handle (ctx->app_session_handle);
f = app_session->rx_fifo;
- read = openssl_read_from_ssl_into_fifo (f, oc->ssl);
+ read = openssl_read_from_ssl_into_fifo (f, oc->ssl, max_len);
/* Unrecoverable protocol error. Reset connection */
if (PREDICT_FALSE (read < 0))