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authorSimon Zhang <yuwei1.zhang@intel.com>2020-03-12 03:37:55 +0800
committerFlorin Coras <florin.coras@gmail.com>2020-03-13 15:21:09 +0000
commit88da0a3054609aaa58c48570dc6453414be7a034 (patch)
treebc295f927355f7769b7d6fda38e948ae960933e1 /src
parentdd9aedaf377f4af8620408843bd3e4610d3df5f9 (diff)
tls: small refactor for Picotls engine ctx_write function
Type: refactor Change-Id: I761fc764e6771dc95eb64614479c27fd44016690 Signed-off-by: Simon Zhang <yuwei1.zhang@intel.com>
Diffstat (limited to 'src')
-rw-r--r--src/plugins/tlspicotls/tls_picotls.c42
-rw-r--r--src/plugins/tlspicotls/tls_picotls.h3
2 files changed, 23 insertions, 22 deletions
diff --git a/src/plugins/tlspicotls/tls_picotls.c b/src/plugins/tlspicotls/tls_picotls.c
index f3fad34b74a..4c500d1052d 100644
--- a/src/plugins/tlspicotls/tls_picotls.c
+++ b/src/plugins/tlspicotls/tls_picotls.c
@@ -407,8 +407,7 @@ picotls_content_process (picotls_ctx_t * ptls_ctx, svm_fifo_t * src_fifo,
}
else
{
- assert (ptls_ctx->is_write_buffer_finished == 1
- && ptls_ctx->write_buffer_offset == 0);
+ assert (!TLS_WRITE_IS_LEFT (ptls_ctx));
vec_validate (ptls_ctx->write_content, total_length);
ptls_buffer_init (buf, ptls_ctx->write_content, total_length);
@@ -416,12 +415,8 @@ picotls_content_process (picotls_ctx_t * ptls_ctx, svm_fifo_t * src_fifo,
svm_fifo_dequeue_drop (src_fifo, content_len);
to_dst_len = svm_fifo_enqueue (dst_fifo, buf->off, buf->base);
- if (to_dst_len < buf->off)
- {
- ptls_ctx->write_buffer_offset += to_dst_len;
- ptls_ctx->is_write_buffer_finished = 0;
- }
}
+ ptls_ctx->write_buffer_offset += to_dst_len;
return to_dst_len;
}
@@ -442,16 +437,20 @@ picotls_ctx_write (tls_ctx_t * ctx, session_t * app_session)
tls_tx_fifo = tls_session->tx_fifo;
app_tx_fifo = app_session->tx_fifo;
- enq_max = svm_fifo_max_enqueue_prod (tls_tx_fifo);
-
- if (PREDICT_FALSE (!ptls_ctx->is_write_buffer_finished))
+ if (PREDICT_FALSE (TLS_WRITE_IS_LEFT (ptls_ctx)))
{
+ enq_max = svm_fifo_max_enqueue_prod (tls_tx_fifo);
int to_write = clib_min (enq_max,
ptls_ctx->write_buffer.off -
ptls_ctx->write_buffer_offset);
- to_tls_len +=
+ to_tls_len =
svm_fifo_enqueue (tls_tx_fifo, to_write, TLS_WRITE_OFFSET (ptls_ctx));
- ptls_ctx->write_buffer_offset += to_write;
+ if (to_tls_len < 0)
+ {
+ tls_add_vpp_q_builtin_tx_evt (app_session);
+ return 0;
+ }
+ ptls_ctx->write_buffer_offset += to_tls_len;
if (TLS_WRITE_IS_LEFT (ptls_ctx))
{
@@ -460,9 +459,10 @@ picotls_ctx_write (tls_ctx_t * ctx, session_t * app_session)
}
else
{
- ptls_ctx->is_write_buffer_finished = 1;
+ ptls_buffer_init (&ptls_ctx->write_buffer, "", 0);
ptls_ctx->write_buffer_offset = 0;
}
+
}
deq_max = svm_fifo_max_dequeue_cons (app_tx_fifo);
@@ -470,9 +470,9 @@ picotls_ctx_write (tls_ctx_t * ctx, session_t * app_session)
return deq_max;
deq_now = clib_min (deq_max, svm_fifo_max_read_chunk (app_tx_fifo));
-
+ enq_max = svm_fifo_max_enqueue_prod (tls_tx_fifo);
/** There is no engough enqueue space for one record **/
- if (enq_max < record_overhead)
+ if (enq_max <= record_overhead)
{
tls_add_vpp_q_builtin_tx_evt (app_session);
return 0;
@@ -490,8 +490,6 @@ picotls_ctx_write (tls_ctx_t * ctx, session_t * app_session)
total_overhead = num_records * record_overhead;
if (from_app_len + total_overhead > enq_now)
from_app_len = enq_now - total_overhead;
-
-
}
else
{
@@ -506,6 +504,11 @@ picotls_ctx_write (tls_ctx_t * ctx, session_t * app_session)
to_tls_len =
picotls_content_process (ptls_ctx, app_tx_fifo, tls_tx_fifo,
from_app_len, total_overhead, is_nocopy);
+ if (!TLS_WRITE_IS_LEFT (ptls_ctx))
+ {
+ ptls_ctx->write_buffer_offset = 0;
+ ptls_buffer_init (&ptls_ctx->write_buffer, "", 0);
+ }
if (svm_fifo_needs_deq_ntf (app_tx_fifo, from_app_len))
session_dequeue_notify (app_session);
@@ -513,7 +516,7 @@ picotls_ctx_write (tls_ctx_t * ctx, session_t * app_session)
if (to_tls_len)
tls_add_vpp_q_tx_evt (tls_session);
- if (from_app_len < deq_max || ptls_ctx->is_write_buffer_finished == 0)
+ if (from_app_len < deq_max || TLS_WRITE_IS_LEFT (ptls_ctx))
tls_add_vpp_q_builtin_tx_evt (app_session);
if (ctx->app_closed)
@@ -542,8 +545,7 @@ picotls_ctx_init_server (tls_ctx_t * ctx)
ptls_ctx->rx_content = malloc (MAX_QUEUE);
- ptls_ctx->is_write_buffer_finished = 1;
-
+ ptls_ctx->write_buffer_offset = 0;
return 0;
}
diff --git a/src/plugins/tlspicotls/tls_picotls.h b/src/plugins/tlspicotls/tls_picotls.h
index 1a253f0e45c..0fa19c538ad 100644
--- a/src/plugins/tlspicotls/tls_picotls.h
+++ b/src/plugins/tlspicotls/tls_picotls.h
@@ -13,7 +13,7 @@
#define TLS_RX_LEFT_LEN(x) ((x)->rx_len - (x)->rx_offset)
#define TLS_WRITE_OFFSET(x) ((x)->write_buffer.base + (x)->write_buffer_offset)
-#define TLS_WRITE_IS_LEFT(x) ((x)->write_buffer.off == (x)->write_buffer_offset)
+#define TLS_WRITE_IS_LEFT(x) ((x)->write_buffer.off != 0 && (x)->write_buffer.off != (x)->write_buffer_offset)
typedef struct tls_ctx_picotls_
@@ -27,7 +27,6 @@ typedef struct tls_ctx_picotls_
ptls_buffer_t write_buffer;
uint8_t *write_content;
int write_buffer_offset;
- int is_write_buffer_finished;
} picotls_ctx_t;
typedef struct tls_listen_ctx_picotls_