diff options
Diffstat (limited to 'src/vnet/unix/tuntap.c')
| -rw-r--r-- | src/vnet/unix/tuntap.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/src/vnet/unix/tuntap.c b/src/vnet/unix/tuntap.c index 9616feb2d51..dc5c2a890d8 100644 --- a/src/vnet/unix/tuntap.c +++ b/src/vnet/unix/tuntap.c @@ -71,8 +71,11 @@ typedef struct { * @brief TUNTAP node main state */ typedef struct { - /** Vector of iovecs for readv/writev calls. */ - struct iovec * iovecs; + /** Vector of iovecs for readv calls. */ + struct iovec * rd_iovecs; + + /** Vector of iovecs for writev calls. */ + struct iovec * wr_iovecs; /** Vector of VLIB rx buffers to use. We allocate them in blocks of VLIB_FRAME_SIZE (256). */ @@ -160,11 +163,11 @@ tuntap_tx (vlib_main_t * vm, } /* Re-set iovecs if present. */ - if (tm->iovecs) - _vec_len (tm->iovecs) = 0; + if (tm->wr_iovecs) + _vec_len (tm->wr_iovecs) = 0; /** VLIB buffer chain -> Unix iovec(s). */ - vec_add2 (tm->iovecs, iov, 1); + vec_add2 (tm->wr_iovecs, iov, 1); iov->iov_base = b->data + b->current_data; iov->iov_len = l = b->current_length; @@ -173,7 +176,7 @@ tuntap_tx (vlib_main_t * vm, do { b = vlib_get_buffer (vm, b->next_buffer); - vec_add2 (tm->iovecs, iov, 1); + vec_add2 (tm->wr_iovecs, iov, 1); iov->iov_base = b->data + b->current_data; iov->iov_len = b->current_length; @@ -181,7 +184,8 @@ tuntap_tx (vlib_main_t * vm, } while (b->flags & VLIB_BUFFER_NEXT_PRESENT); } - if (writev (tm->dev_net_tun_fd, tm->iovecs, vec_len (tm->iovecs)) < l) + if (writev (tm->dev_net_tun_fd, tm->wr_iovecs, + vec_len (tm->wr_iovecs)) < l) clib_unix_warning ("writev"); n_bytes += l; @@ -256,15 +260,15 @@ tuntap_rx (vlib_main_t * vm, /** We should have enough buffers left for an MTU sized packet. */ ASSERT (vec_len (tm->rx_buffers) >= tm->mtu_buffers); - vec_validate (tm->iovecs, tm->mtu_buffers - 1); + vec_validate (tm->rd_iovecs, tm->mtu_buffers - 1); for (i = 0; i < tm->mtu_buffers; i++) { b = vlib_get_buffer (vm, tm->rx_buffers[i_rx - i]); - tm->iovecs[i].iov_base = b->data; - tm->iovecs[i].iov_len = buffer_size; + tm->rd_iovecs[i].iov_base = b->data; + tm->rd_iovecs[i].iov_len = buffer_size; } - n_bytes_left = readv (tm->dev_net_tun_fd, tm->iovecs, tm->mtu_buffers); + n_bytes_left = readv (tm->dev_net_tun_fd, tm->rd_iovecs, tm->mtu_buffers); n_bytes_in_packet = n_bytes_left; if (n_bytes_left <= 0) { |