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authorSimon Zhang <yuwei1.zhang@intel.com>2020-03-13 17:03:53 +0800
committerSimon Zhang <yuwei1.zhang@intel.com>2020-03-16 12:39:27 +0000
commit3cfed05891ca7791e9d8aa8c5ff584de741819f7 (patch)
tree7a5d8370f037ead9e8ec778647925cb6dbc4efd4 /src/plugins/tlspicotls
parent7c0eb56f40b3ccf8acd8f04e208aa50231aebeba (diff)
tls: refactor Picotls ctx_read function to reduce one time memory copy
Type: refactor Signed-off-by: Simon Zhang <yuwei1.zhang@intel.com> Change-Id: I7a952fd95e49468a0d1c763b3e289648c93539da
Diffstat (limited to 'src/plugins/tlspicotls')
-rw-r--r--src/plugins/tlspicotls/tls_picotls.c99
-rw-r--r--src/plugins/tlspicotls/tls_picotls.h8
2 files changed, 50 insertions, 57 deletions
diff --git a/src/plugins/tlspicotls/tls_picotls.c b/src/plugins/tlspicotls/tls_picotls.c
index 4c500d1052d..17834e3e051 100644
--- a/src/plugins/tlspicotls/tls_picotls.c
+++ b/src/plugins/tlspicotls/tls_picotls.c
@@ -32,7 +32,8 @@ static void
picotls_ctx_free (tls_ctx_t * ctx)
{
picotls_ctx_t *ptls_ctx = (picotls_ctx_t *) ctx;
- free (ptls_ctx->rx_content);
+ vec_free (ptls_ctx->rx_content);
+ vec_free (ptls_ctx->write_content);
pool_put_index (picotls_main.ctx_pool[ctx->c_thread_index],
ptls_ctx->ptls_ctx_idx);
}
@@ -255,10 +256,10 @@ static inline int
picotls_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
{
picotls_ctx_t *ptls_ctx = (picotls_ctx_t *) ctx;
- int from_tls_len = 0, to_app_len = 0, off, crypto_len, ret;
+ int from_tls_len = 0, off, crypto_len, ret;
u32 deq_max, deq_now;
- u32 enq_max, enq_now;
- ptls_buffer_t _buf, *buf = &_buf;
+ u32 enq_max;
+ ptls_buffer_t *buf = &ptls_ctx->read_buffer;
svm_fifo_t *tls_rx_fifo, *app_rx_fifo;
session_t *app_session;
@@ -267,27 +268,17 @@ picotls_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
if (!picotls_handshake_is_over (ctx))
{
deq_max = svm_fifo_max_dequeue_cons (tls_rx_fifo);
- deq_now = clib_min (deq_max, svm_fifo_max_read_chunk (tls_rx_fifo));
- if (!deq_now)
+ if (!deq_max)
goto done_hs;
- off = svm_fifo_dequeue (tls_rx_fifo, deq_now, TLS_RX_LEN (ptls_ctx));
+ vec_validate (ptls_ctx->rx_content, deq_max);
+ ptls_ctx->rx_offset = 0;
+ ptls_ctx->rx_len = 0;
+
+ off = svm_fifo_dequeue (tls_rx_fifo, deq_max, TLS_RX_LEN (ptls_ctx));
from_tls_len += off;
ptls_ctx->rx_len += off;
- if (from_tls_len <= 0)
- {
- tls_add_vpp_q_builtin_rx_evt (tls_session);
- goto done_hs;
- }
- if (from_tls_len < deq_max)
- {
- deq_now = clib_min (svm_fifo_max_read_chunk (tls_rx_fifo),
- deq_max - from_tls_len);
- off = svm_fifo_dequeue (tls_rx_fifo, deq_now,
- TLS_RX_LEN (ptls_ctx));
- from_tls_len += off;
- ptls_ctx->rx_len += off;
- }
+
picotls_do_handshake (ptls_ctx, tls_session, TLS_RX_OFFSET (ptls_ctx),
from_tls_len);
if (picotls_handshake_is_over (ctx))
@@ -301,7 +292,11 @@ picotls_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
app_session = session_get_from_handle (ctx->app_session_handle);
app_rx_fifo = app_session->rx_fifo;
+ if (TLS_READ_IS_LEFT (ptls_ctx))
+ goto enq_buf;
+
ptls_buffer_init (buf, "", 0);
+ ptls_ctx->read_buffer_offset = 0;
if (!TLS_RX_IS_LEFT (ptls_ctx))
{
@@ -311,33 +306,28 @@ picotls_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
deq_now = clib_min (deq_max, svm_fifo_max_read_chunk (tls_rx_fifo));
- off = svm_fifo_dequeue (tls_rx_fifo, deq_now, TLS_RX_LEN (ptls_ctx));
- from_tls_len = off;
- ptls_ctx->rx_len += off;
-
- if (from_tls_len < deq_max)
+ if (PREDICT_FALSE (deq_now < deq_max))
{
- deq_now =
- clib_min (svm_fifo_max_read_chunk (tls_rx_fifo),
- deq_max - from_tls_len);
off =
- svm_fifo_dequeue (tls_rx_fifo, deq_now, TLS_RX_LEN (ptls_ctx));
+ svm_fifo_dequeue (tls_rx_fifo, deq_max, TLS_RX_LEN (ptls_ctx));
from_tls_len += off;
ptls_ctx->rx_len += off;
}
-
- if (from_tls_len < deq_max)
- tls_add_vpp_q_builtin_rx_evt (tls_session);
+ else
+ {
+ ret =
+ ptls_receive (ptls_ctx->tls, buf, svm_fifo_head (tls_rx_fifo),
+ (size_t *) & deq_now);
+ svm_fifo_dequeue_drop (tls_rx_fifo, deq_now);
+ goto enq_buf;
+ }
}
app_fifo:
enq_max = svm_fifo_max_enqueue_prod (app_rx_fifo);
if (!enq_max)
- {
- tls_add_vpp_q_builtin_rx_evt (tls_session);
- goto final;
- }
+ goto final;
crypto_len = clib_min (enq_max, TLS_RX_LEFT_LEN (ptls_ctx));
off = 0;
@@ -353,24 +343,22 @@ app_fifo:
}
while (ret == 0 && off < crypto_len);
- if (ret == 0)
+enq_buf:
+
+ off =
+ svm_fifo_enqueue (app_rx_fifo, TLS_READ_LEFT_LEN (ptls_ctx),
+ TLS_READ_OFFSET (ptls_ctx));
+ if (off < 0)
{
- enq_now = clib_min (buf->off, svm_fifo_max_write_chunk (app_rx_fifo));
- to_app_len = svm_fifo_enqueue (app_rx_fifo, enq_now, buf->base);
- if (to_app_len < buf->off)
- {
- enq_now =
- clib_min (svm_fifo_max_write_chunk (app_rx_fifo),
- buf->off - to_app_len);
- to_app_len +=
- svm_fifo_enqueue (app_rx_fifo, enq_now, buf->base + to_app_len);
- }
- if (ptls_ctx->rx_len != 0 && !TLS_RX_IS_LEFT (ptls_ctx))
- {
- ptls_ctx->rx_len = 0;
- ptls_ctx->rx_offset = 0;
- }
+ tls_add_vpp_q_builtin_rx_evt (tls_session);
+ return 0;
+ }
+ ptls_ctx->read_buffer_offset += off;
+ if (!TLS_RX_IS_LEFT (ptls_ctx))
+ {
+ ptls_ctx->rx_len = 0;
+ ptls_ctx->rx_offset = 0;
}
final:
@@ -379,7 +367,8 @@ final:
if (app_session->session_state >= SESSION_STATE_READY)
tls_notify_app_enqueue (ctx, app_session);
- if (TLS_RX_IS_LEFT (ptls_ctx))
+ if (TLS_RX_IS_LEFT (ptls_ctx) || TLS_READ_IS_LEFT (ptls_ctx)
+ || svm_fifo_max_dequeue (tls_rx_fifo))
tls_add_vpp_q_builtin_rx_evt (tls_session);
return from_tls_len;
@@ -543,8 +532,6 @@ picotls_ctx_init_server (tls_ctx_t * ctx)
ptls_ctx->rx_len = 0;
ptls_ctx->rx_offset = 0;
- ptls_ctx->rx_content = malloc (MAX_QUEUE);
-
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 0fa19c538ad..92f7b0f9ed5 100644
--- a/src/plugins/tlspicotls/tls_picotls.h
+++ b/src/plugins/tlspicotls/tls_picotls.h
@@ -9,9 +9,13 @@
#define TLS_RX_LEN(x) ((x)->rx_content + (x)->rx_len)
#define TLS_RX_OFFSET(x) ((x)->rx_content + (x)->rx_offset)
-#define TLS_RX_IS_LEFT(x) ((x)->rx_len != (x)->rx_offset)
+#define TLS_RX_IS_LEFT(x) ((x)->rx_len != 0 && (x)->rx_len != (x)->rx_offset)
#define TLS_RX_LEFT_LEN(x) ((x)->rx_len - (x)->rx_offset)
+#define TLS_READ_OFFSET(x) ((x)->read_buffer.base + (x)->read_buffer_offset)
+#define TLS_READ_IS_LEFT(x) ((x)->read_buffer.off != 0 && (x)->read_buffer.off != (x)->read_buffer_offset)
+#define TLS_READ_LEFT_LEN(x) ((x)->read_buffer.off - (x)->read_buffer_offset)
+
#define TLS_WRITE_OFFSET(x) ((x)->write_buffer.base + (x)->write_buffer_offset)
#define TLS_WRITE_IS_LEFT(x) ((x)->write_buffer.off != 0 && (x)->write_buffer.off != (x)->write_buffer_offset)
@@ -24,8 +28,10 @@ typedef struct tls_ctx_picotls_
u8 *rx_content;
int rx_offset;
int rx_len;
+ ptls_buffer_t read_buffer;
ptls_buffer_t write_buffer;
uint8_t *write_content;
+ int read_buffer_offset;
int write_buffer_offset;
} picotls_ctx_t;