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authorOle Troan <ot@cisco.com>2018-08-02 11:58:12 +0200
committerFlorin Coras <florin.coras@gmail.com>2018-10-02 21:10:20 +0000
commit94495f2a6a68ac2202b7715ce09620f1ba6fe673 (patch)
treeb87604a42f7cacedff6c82f7d8fc68adc8348a5f /src/vlibmemory/socket_api.c
parent84db4087fa38b8d4c62cbb0787d600950638034c (diff)
PAPI: Use UNIX domain sockets instead of shared memory
Adds support for running the API purely across Unix domain sockets. Usage: vpp = VPP(use_socket=True) Change-Id: Iafc1301e03dd3edc3f4d702dd6c0b98d3b50b69e Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'src/vlibmemory/socket_api.c')
-rw-r--r--src/vlibmemory/socket_api.c101
1 files changed, 72 insertions, 29 deletions
diff --git a/src/vlibmemory/socket_api.c b/src/vlibmemory/socket_api.c
index afe02d20536..4787069daa3 100644
--- a/src/vlibmemory/socket_api.c
+++ b/src/vlibmemory/socket_api.c
@@ -1,6 +1,6 @@
/*
*------------------------------------------------------------------
- * socksvr_vlib.c
+ * socket_api.c
*
* Copyright (c) 2009 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
@@ -74,6 +74,20 @@ vl_sock_api_dump_clients (vlib_main_t * vm, api_main_t * am)
/* *INDENT-ON* */
}
+vl_api_registration_t *
+vl_socket_api_client_index_to_registration (u32 index)
+{
+ socket_main_t *sm = &socket_main;
+ if (pool_is_free_index (sm->registration_pool, ntohl (index)))
+ {
+#if DEBUG > 2
+ clib_warning ("Invalid index %d\n", ntohl (index));
+#endif
+ return 0;
+ }
+ return pool_elt_at_index (sm->registration_pool, ntohl (index));
+}
+
void
vl_socket_api_send (vl_api_registration_t * rp, u8 * elem)
{
@@ -289,26 +303,37 @@ vl_socket_write_ready (clib_file_t * uf)
rp = pool_elt_at_index (socket_main.registration_pool, uf->private_data);
/* Flush output vector. */
- n = write (uf->file_descriptor, rp->output_vector,
- vec_len (rp->output_vector));
- if (n < 0)
+ size_t total_bytes = vec_len (rp->output_vector);
+ size_t bytes_to_send, remaining_bytes = total_bytes;
+ void *p = rp->output_vector;
+ while (remaining_bytes > 0)
{
+ bytes_to_send = remaining_bytes > 4096 ? 4096 : remaining_bytes;
+ n = write (uf->file_descriptor, p, bytes_to_send);
+ if (n < 0)
+ {
+ if (errno == EAGAIN)
+ {
+ break;
+ }
#if DEBUG > 2
- clib_warning ("write error, close the file...\n");
+ clib_warning ("write error, close the file...\n");
#endif
- clib_file_del (fm, uf);
- vl_socket_free_registration_index (rp - socket_main.registration_pool);
- return 0;
+ clib_file_del (fm, uf);
+ vl_socket_free_registration_index (rp -
+ socket_main.registration_pool);
+ return 0;
+ }
+ remaining_bytes -= bytes_to_send;
+ p += bytes_to_send;
}
- else if (n > 0)
+
+ vec_delete (rp->output_vector, total_bytes - remaining_bytes, 0);
+ if (vec_len (rp->output_vector) <= 0
+ && (uf->flags & UNIX_FILE_DATA_AVAILABLE_TO_WRITE))
{
- vec_delete (rp->output_vector, n, 0);
- if (vec_len (rp->output_vector) <= 0
- && (uf->flags & UNIX_FILE_DATA_AVAILABLE_TO_WRITE))
- {
- uf->flags &= ~UNIX_FILE_DATA_AVAILABLE_TO_WRITE;
- fm->file_update (uf, UNIX_FILE_UPDATE_MODIFY);
- }
+ uf->flags &= ~UNIX_FILE_DATA_AVAILABLE_TO_WRITE;
+ fm->file_update (uf, UNIX_FILE_UPDATE_MODIFY);
}
return 0;
@@ -379,7 +404,11 @@ vl_api_sockclnt_create_t_handler (vl_api_sockclnt_create_t * mp)
{
vl_api_registration_t *regp;
vl_api_sockclnt_create_reply_t *rp;
+ api_main_t *am = &api_main;
+ hash_pair_t *hp;
int rv = 0;
+ u32 nmsg = hash_elts (am->msg_index_by_name_and_crc);
+ u32 i = 0;
regp = socket_main.current_rp;
@@ -387,13 +416,22 @@ vl_api_sockclnt_create_t_handler (vl_api_sockclnt_create_t * mp)
regp->name = format (0, "%s%c", mp->name, 0);
- rp = vl_msg_api_alloc (sizeof (*rp));
+ u32 size = sizeof (*rp) + (nmsg * sizeof (vl_api_message_table_entry_t));
+ rp = vl_msg_api_alloc (size);
rp->_vl_msg_id = htons (VL_API_SOCKCLNT_CREATE_REPLY);
- rp->handle = (uword) regp;
- rp->index = (uword) regp->vl_api_registration_pool_index;
+ rp->index = htonl (regp->vl_api_registration_pool_index);
rp->context = mp->context;
rp->response = htonl (rv);
-
+ rp->count = htons (nmsg);
+
+ /* *INDENT-OFF* */
+ hash_foreach_pair (hp, am->msg_index_by_name_and_crc,
+ ({
+ rp->message_table[i].index = htons(hp->value[0]);
+ strncpy((char *)rp->message_table[i].name, (char *)hp->key, 64-1);
+ i++;
+ }));
+ /* *INDENT-ON* */
vl_api_send_msg (regp, (u8 *) rp);
}
@@ -406,23 +444,28 @@ vl_api_sockclnt_delete_t_handler (vl_api_sockclnt_delete_t * mp)
vl_api_registration_t *regp;
vl_api_sockclnt_delete_reply_t *rp;
- if (!pool_is_free_index (socket_main.registration_pool, mp->index))
- {
- regp = pool_elt_at_index (socket_main.registration_pool, mp->index);
+ regp = vl_api_client_index_to_registration (mp->client_index);
+ if (!regp)
+ return;
- rp = vl_msg_api_alloc (sizeof (*rp));
- rp->_vl_msg_id = htons (VL_API_SOCKCLNT_DELETE_REPLY);
- rp->handle = mp->handle;
- rp->response = htonl (1);
+ u32 reg_index = ntohl (mp->index);
+ rp = vl_msg_api_alloc (sizeof (*rp));
+ rp->_vl_msg_id = htons (VL_API_SOCKCLNT_DELETE_REPLY);
+ rp->context = mp->context;
+ if (!pool_is_free_index (socket_main.registration_pool, reg_index))
+ {
+ rp->response = htonl (1);
vl_api_send_msg (regp, (u8 *) rp);
vl_api_registration_del_file (regp);
- vl_socket_free_registration_index (mp->index);
+ vl_socket_free_registration_index (reg_index);
}
else
{
- clib_warning ("unknown client ID %d", mp->index);
+ clib_warning ("unknown client ID %d", reg_index);
+ rp->response = htonl (-1);
+ vl_api_send_msg (regp, (u8 *) rp);
}
}