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api: add macro that zeros out api reply buffer

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Add macros REPLY_MACRO2_ZERO, REPLY_MACRO3_ZERO that zeros the buffer
before the values are set. This way if say, a u8[64] field is
only filled with 10 octets, the previous buffers trailing
contents are not sent.

Type: feature

Change-Id: Ia69cc9aa477f463336483f7556de32476a6f2d51
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
This commit is contained in:
Paul Vinciguerra
2020-01-27 18:42:25 -05:00
committed by Ole Trøan
parent 7d4cd0cf6f
commit f24de1795c
1 changed files with 32 additions and 0 deletions
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32
src/vlibapi/api_helper_macros.h
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@ -59,6 +59,22 @@ do { \
vl_api_send_msg (rp, (u8 *)rmp); \
} while(0);
#define REPLY_MACRO2_ZERO(t, body) \
do { \
vl_api_registration_t *rp; \
rv = vl_msg_api_pd_handler (mp, rv); \
rp = vl_api_client_index_to_registration (mp->client_index); \
if (rp == 0) \
return; \
\
rmp = vl_msg_api_alloc_zero (sizeof (*rmp)); \
rmp->_vl_msg_id = htons((t)+(REPLY_MSG_ID_BASE)); \
rmp->context = mp->context; \
rmp->retval = ntohl(rv); \
do {body;} while (0); \
vl_api_send_msg (rp, (u8 *)rmp); \
} while(0);
#define REPLY_MACRO_DETAILS2(t, body) \
do { \
vl_api_registration_t *rp; \
@ -90,6 +106,22 @@ do { \
vl_api_send_msg (rp, (u8 *)rmp); \
} while(0);
#define REPLY_MACRO3_ZERO(t, n, body) \
do { \
vl_api_registration_t *rp; \
rv = vl_msg_api_pd_handler (mp, rv); \
rp = vl_api_client_index_to_registration (mp->client_index); \
if (rp == 0) \
return; \
\
rmp = vl_msg_api_alloc_zero (sizeof (*rmp) + n); \
rmp->_vl_msg_id = htons((t)+(REPLY_MSG_ID_BASE)); \
rmp->context = mp->context; \
rmp->retval = ntohl(rv); \
do {body;} while (0); \
vl_api_send_msg (rp, (u8 *)rmp); \
} while(0);
#define REPLY_MACRO4(t, n, body) \
do { \
vl_api_registration_t *rp; \