build: add -Wall and -fno-common, fix reported issues

Type: refactor
Change-Id: I8489ccd54411c2aa9355439c5641dc31012c64a2
Signed-off-by: Benoît Ganne <bganne@cisco.com>
Signed-off-by: Damjan Marion <damarion@cisco.com>

6 files changed, 10 insertions, 39 deletions

diff --git a/extras/libmemif/examples/icmp_responder-eb/main.c b/extras/libmemif/examples/icmp_responder-eb/main.c
index 9e71d283c2c..646a6ca0511 100644
--- a/extras/libmemif/examples/icmp_responder-eb/main.c
+++ b/extras/libmemif/examples/icmp_responder-eb/main.c
@@ -462,6 +462,9 @@ icmpr_add_external_region (void * *addr, uint32_t size, int *fd,
 
   err = ftruncate (rfd, size);
 
+  if (err)
+    return err;
+
   raddr = mmap (NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, rfd, 0);
 
   *addr = raddr;
@@ -500,7 +503,6 @@ on_interrupt (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
 
   int err = MEMIF_ERR_SUCCESS, ret_val;
   uint16_t rx = 0, tx = 0;
-  uint16_t fb = 0;
   int i = 0;
   int j = 0;
 
@@ -579,8 +581,6 @@ on_interrupt1 (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
   int err = MEMIF_ERR_SUCCESS, ret_val;
   int i;
   uint16_t rx, tx;
-  uint16_t fb;
-  uint16_t pck_seq;
 
   do
     {
@@ -657,7 +657,6 @@ icmpr_memif_create (long index, long mode, char *s)
   memif_connection_t *c = &memif_connection[index];
 
   memif_conn_args_t args;
-  int fd = -1;
   memset (&args, 0, sizeof (args));
   args.is_master = mode;
   args.log2_ring_size = 11;
@@ -830,8 +829,6 @@ icmpr_send (long index, long packet_num, char *hw, char *ip)
   memif_connection_t *c = &memif_connection[index];
   if (c->conn == NULL)
     return -1;
-  int err, i;
-  uint16_t tx = 0, rx = 0;
   char *end, *ui;
   uint8_t tmp[6];
   icmpr_thread_data_t *data = &icmpr_thread_data[index];
@@ -977,9 +974,8 @@ done:
 int
 poll_event (int timeout)
 {
-  struct epoll_event evt, *e;
+  struct epoll_event evt;
   int app_err = 0, memif_err = 0, en = 0;
-  int tmp, nfd;
   uint32_t events = 0;
   memset (&evt, 0, sizeof (evt));
   evt.events = EPOLLIN | EPOLLOUT;
diff --git a/extras/libmemif/examples/icmp_responder-epoll/main.c b/extras/libmemif/examples/icmp_responder-epoll/main.c
index 02414fa25be..ecc05a41e77 100644
--- a/extras/libmemif/examples/icmp_responder-epoll/main.c
+++ b/extras/libmemif/examples/icmp_responder-epoll/main.c
@@ -372,7 +372,6 @@ on_interrupt (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
 
   int err = MEMIF_ERR_SUCCESS, ret_val;
   uint16_t rx = 0, tx = 0;
-  uint16_t fb = 0;
   int i = 0;			/* rx buffer iterator */
   int j = 0;			/* tx bufferiterator */
 
@@ -457,10 +456,8 @@ on_interrupt0 (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
 
   int err = MEMIF_ERR_SUCCESS, ret_val;
   uint16_t rx = 0, tx = 0;
-  uint16_t fb;
   int i;			/* rx buffer iterator */
   int j;			/* tx bufferiterator */
-  int prev_i;			/* first allocated rx buffer */
 
   /* loop while there are packets in shm */
   do
@@ -475,7 +472,7 @@ on_interrupt0 (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
 	  goto error;
 	}
 
-      prev_i = i = 0;
+      i = 0;
 
       /* loop while there are RX buffers to be processed */
       while (rx)
@@ -522,7 +519,6 @@ on_interrupt0 (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
 	  if (err != MEMIF_ERR_SUCCESS)
 	    INFO ("memif_buffer_free: %s", memif_strerror (err));
 	  rx -= j;
-	  prev_i = i;
 
 	  DBG ("freed %d buffers. %u/%u alloc/free buffers",
 	       fb, rx, MAX_MEMIF_BUFS - rx);
@@ -570,8 +566,6 @@ on_interrupt1 (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
   int err = MEMIF_ERR_SUCCESS, ret_val;
   int i;
   uint16_t rx, tx;
-  uint16_t fb;
-  uint16_t pck_seq;
 
   do
     {
@@ -639,7 +633,6 @@ icmpr_memif_create (long index, long mode, char *s)
 
   /* setting memif connection arguments */
   memif_conn_args_t args;
-  int fd = -1;
   memset (&args, 0, sizeof (args));
   args.is_master = mode;
   args.log2_ring_size = 11;
@@ -1106,7 +1099,6 @@ error:
 int
 user_input_handler ()
 {
-  int i;
   char *in = (char *) malloc (256);
   char *ui = fgets (in, 256, stdin);
   char *end;
@@ -1223,9 +1215,8 @@ done:
 int
 poll_event (int timeout)
 {
-  struct epoll_event evt, *e;
+  struct epoll_event evt;
   int app_err = 0, memif_err = 0, en = 0;
-  int tmp, nfd;
   uint32_t events = 0;
   struct timespec start, end;
   memset (&evt, 0, sizeof (evt));
diff --git a/extras/libmemif/examples/icmp_responder-mt/main.c b/extras/libmemif/examples/icmp_responder-mt/main.c
index 8fa64cf93af..bc2f71dd328 100644
--- a/extras/libmemif/examples/icmp_responder-mt/main.c
+++ b/extras/libmemif/examples/icmp_responder-mt/main.c
@@ -112,7 +112,6 @@ pthread_t thread[MAX_THREADS];
 void
 user_signal_handler (int sig)
 {
-  sig = sig;
 }
 
 static void
@@ -375,9 +374,8 @@ memif_rx_interrupt (void *ptr)
   memif_connection_t *c = &memif_connection[data->index];
   int err;
   uint16_t rx = 0, tx = 0, fb = 0;
-  struct epoll_event evt, *e;
+  struct epoll_event evt;
   int en = 0;
-  uint32_t events = 0;
   sigset_t sigset;
 
   signal (SIGUSR1, user_signal_handler);
@@ -602,7 +600,6 @@ icmpr_memif_create (long index)
 
   /* setting memif connection arguments */
   memif_conn_args_t args;
-  int fd = -1;
   memset (&args, 0, sizeof (args));
   args.is_master = 0;
   args.log2_ring_size = 10;
@@ -765,7 +762,6 @@ error:
 int
 user_input_handler ()
 {
-  int i;
   char *in = (char *) malloc (256);
   char *ui = fgets (in, 256, stdin);
   char *end;
@@ -830,9 +826,8 @@ done:
 int
 poll_event (int timeout)
 {
-  struct epoll_event evt, *e;
+  struct epoll_event evt;
   int app_err = 0, memif_err = 0, en = 0;
-  int tmp, nfd;
   uint32_t events = 0;
   memset (&evt, 0, sizeof (evt));
   evt.events = EPOLLIN | EPOLLOUT;
diff --git a/extras/libmemif/examples/icmp_responder-zero-copy-slave/main.c b/extras/libmemif/examples/icmp_responder-zero-copy-slave/main.c
index aad33039bd8..7913588299a 100644
--- a/extras/libmemif/examples/icmp_responder-zero-copy-slave/main.c
+++ b/extras/libmemif/examples/icmp_responder-zero-copy-slave/main.c
@@ -330,9 +330,7 @@ on_interrupt (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
 
   int err = MEMIF_ERR_SUCCESS, ret_val;
   uint16_t rx = 0, tx = 0;
-  uint16_t fb = 0;
   int i = 0;			/* rx buffer iterator */
-  int j = 0;			/* tx bufferiterator */
 
   /* loop while there are packets in shm */
   do
@@ -413,9 +411,7 @@ on_interrupt0 (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
 
   int err = MEMIF_ERR_SUCCESS, ret_val;
   uint16_t rx = 0, tx = 0;
-  uint16_t fb = 0;
   int i = 0;			/* rx buffer iterator */
-  int j = 0;			/* tx bufferiterator */
 
   /* loop while there are packets in shm */
   do
@@ -497,8 +493,6 @@ on_interrupt1 (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
   int err = MEMIF_ERR_SUCCESS, ret_val;
   int i;
   uint16_t rx, tx;
-  uint16_t fb;
-  uint16_t pck_seq;
 
   do
     {
@@ -565,7 +559,6 @@ icmpr_memif_create (long index, long mode, char *s)
 
   /* setting memif connection arguments */
   memif_conn_args_t args;
-  int fd = -1;
   memset (&args, 0, sizeof (args));
   args.is_master = mode;
   args.log2_ring_size = 11;
@@ -1051,7 +1044,6 @@ error:
 int
 user_input_handler ()
 {
-  int i;
   char *in = (char *) malloc (256);
   char *ui = fgets (in, 256, stdin);
   char *end;
@@ -1167,9 +1159,8 @@ done:
 int
 poll_event (int timeout)
 {
-  struct epoll_event evt, *e;
+  struct epoll_event evt;
   int app_err = 0, memif_err = 0, en = 0;
-  int tmp, nfd;
   uint32_t events = 0;
   struct timespec start, end;
   memset (&evt, 0, sizeof (evt));
diff --git a/extras/libmemif/examples/icmp_responder/icmp_proto.c b/extras/libmemif/examples/icmp_responder/icmp_proto.c
index e1d255aca27..785aebd5567 100644
--- a/extras/libmemif/examples/icmp_responder/icmp_proto.c
+++ b/extras/libmemif/examples/icmp_responder/icmp_proto.c
@@ -458,7 +458,6 @@ int
 resolve_packet3 (void **pck_, uint32_t * size, uint8_t ip_addr[4])
 {
   struct ether_header *eh;
-  struct ether_arp *eah;
   struct iphdr *ip;
   struct icmphdr *icmp;
   int32_t offset = 0;
diff --git a/extras/libmemif/examples/icmp_responder/main.c b/extras/libmemif/examples/icmp_responder/main.c
index fa7bcb9a636..2e85d0320d5 100644
--- a/extras/libmemif/examples/icmp_responder/main.c
+++ b/extras/libmemif/examples/icmp_responder/main.c
@@ -290,6 +290,7 @@ on_interrupt (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
   memif_connection_t *c = &memif_connection;
   int err;
   uint16_t rx;
+  uint16_t fb = 0;
   /* receive data from shared memory buffers */
   err = memif_rx_burst (c->conn, qid, c->rx_bufs, MAX_MEMIF_BUFS, &rx);
   c->rx_buf_num += rx;
@@ -311,7 +312,6 @@ on_interrupt (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
 		      &(c->tx_bufs + i)->len, c->ip_addr);
     }
 
-  uint16_t fb;
   /* mark memif buffers and shared memory buffers as free */
   err = memif_refill_queue (c->conn, qid, rx, 0);
   c->rx_buf_num -= fb;
@@ -338,7 +338,6 @@ icmpr_memif_create (int is_master)
 {
   /* setting memif connection arguments */
   memif_conn_args_t args;
-  int fd = -1;
   memset (&args, 0, sizeof (args));
   args.is_master = is_master;
   args.log2_ring_size = 10;