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authorMohammed Hawari <mohammed@hawari.fr>2021-05-12 12:31:01 +0200
committerDamjan Marion <dmarion@me.com>2021-09-07 17:13:45 +0000
commit0b42ac565b970c186a9ad734f980b440f56fb25b (patch)
tree9fc28056012f7c05f9dac0cc76c239da5cd4580f /src/plugins/dpdk/device/node.c
parent5b22339973feaa3eba48ead1e9fb428b1816c0cc (diff)
dpdk: lro support
Change-Id: Ifa09dcdfd567ac3c2afab4bd3bd468260f766e1d Signed-off-by: Mohammed Hawari <mohammed@hawari.fr> Type: improvement
Diffstat (limited to 'src/plugins/dpdk/device/node.c')
-rw-r--r--src/plugins/dpdk/device/node.c86
1 files changed, 74 insertions, 12 deletions
diff --git a/src/plugins/dpdk/device/node.c b/src/plugins/dpdk/device/node.c
index 25222856912..c725681caa5 100644
--- a/src/plugins/dpdk/device/node.c
+++ b/src/plugins/dpdk/device/node.c
@@ -36,9 +36,10 @@ static char *dpdk_error_strings[] = {
#undef _
};
-/* make sure all flags we need are stored in lower 8 bits */
-STATIC_ASSERT ((PKT_RX_IP_CKSUM_BAD | PKT_RX_FDIR) <
- 256, "dpdk flags not un lower byte, fix needed");
+/* make sure all flags we need are stored in lower 32 bits */
+STATIC_ASSERT ((u64) (PKT_RX_IP_CKSUM_BAD | PKT_RX_FDIR | PKT_RX_LRO) <
+ (1ULL << 32),
+ "dpdk flags not in lower word, fix needed");
static_always_inline uword
dpdk_process_subseq_segs (vlib_main_t * vm, vlib_buffer_t * b,
@@ -145,31 +146,30 @@ dpdk_prefetch_buffer_x4 (struct rte_mbuf *mb[])
<code>xd->per_interface_next_index</code>
*/
-static_always_inline u16
-dpdk_ol_flags_extract (struct rte_mbuf **mb, u16 * flags, int count)
+static_always_inline u32
+dpdk_ol_flags_extract (struct rte_mbuf **mb, u32 *flags, int count)
{
- u16 rv = 0;
+ u32 rv = 0;
int i;
for (i = 0; i < count; i++)
{
/* all flags we are interested in are in lower 8 bits but
that might change */
- flags[i] = (u16) mb[i]->ol_flags;
+ flags[i] = (u32) mb[i]->ol_flags;
rv |= flags[i];
}
return rv;
}
static_always_inline uword
-dpdk_process_rx_burst (vlib_main_t * vm, dpdk_per_thread_data_t * ptd,
- uword n_rx_packets, int maybe_multiseg,
- u16 * or_flagsp)
+dpdk_process_rx_burst (vlib_main_t *vm, dpdk_per_thread_data_t *ptd,
+ uword n_rx_packets, int maybe_multiseg, u32 *or_flagsp)
{
u32 n_left = n_rx_packets;
vlib_buffer_t *b[4];
struct rte_mbuf **mb = ptd->mbufs;
uword n_bytes = 0;
- u16 *flags, or_flags = 0;
+ u32 *flags, or_flags = 0;
vlib_buffer_t bt;
mb = ptd->mbufs;
@@ -277,6 +277,65 @@ dpdk_process_flow_offload (dpdk_device_t * xd, dpdk_per_thread_data_t * ptd,
}
}
+static_always_inline u16
+dpdk_lro_find_l4_hdr_sz (vlib_buffer_t *b)
+{
+ u16 l4_hdr_sz = 0;
+ u16 current_offset = 0;
+ ethernet_header_t *e;
+ tcp_header_t *tcp;
+ u8 *data = vlib_buffer_get_current (b);
+ u16 ethertype;
+ e = (void *) data;
+ current_offset += sizeof (e[0]);
+ ethertype = clib_net_to_host_u16 (e->type);
+ if (ethernet_frame_is_tagged (ethertype))
+ {
+ ethernet_vlan_header_t *vlan = (ethernet_vlan_header_t *) (e + 1);
+ ethertype = clib_net_to_host_u16 (vlan->type);
+ current_offset += sizeof (*vlan);
+ if (ethertype == ETHERNET_TYPE_VLAN)
+ {
+ vlan++;
+ current_offset += sizeof (*vlan);
+ ethertype = clib_net_to_host_u16 (vlan->type);
+ }
+ }
+ data += current_offset;
+ if (ethertype == ETHERNET_TYPE_IP4)
+ {
+ data += sizeof (ip4_header_t);
+ tcp = (void *) data;
+ l4_hdr_sz = tcp_header_bytes (tcp);
+ }
+ else
+ {
+ /* FIXME: extension headers...*/
+ data += sizeof (ip6_header_t);
+ tcp = (void *) data;
+ l4_hdr_sz = tcp_header_bytes (tcp);
+ }
+ return l4_hdr_sz;
+}
+
+static_always_inline void
+dpdk_process_lro_offload (dpdk_device_t *xd, dpdk_per_thread_data_t *ptd,
+ uword n_rx_packets)
+{
+ uword n;
+ vlib_buffer_t *b0;
+ for (n = 0; n < n_rx_packets; n++)
+ {
+ b0 = vlib_buffer_from_rte_mbuf (ptd->mbufs[n]);
+ if (ptd->flags[n] & PKT_RX_LRO)
+ {
+ b0->flags |= VNET_BUFFER_F_GSO;
+ vnet_buffer2 (b0)->gso_size = ptd->mbufs[n]->tso_segsz;
+ vnet_buffer2 (b0)->gso_l4_hdr_sz = dpdk_lro_find_l4_hdr_sz (b0);
+ }
+ }
+}
+
static_always_inline u32
dpdk_device_input (vlib_main_t * vm, dpdk_main_t * dm, dpdk_device_t * xd,
vlib_node_runtime_t * node, u32 thread_index, u16 queue_id)
@@ -289,7 +348,7 @@ dpdk_device_input (vlib_main_t * vm, dpdk_main_t * dm, dpdk_device_t * xd,
struct rte_mbuf **mb;
vlib_buffer_t *b0;
u16 *next;
- u16 or_flags;
+ u32 or_flags;
u32 n;
int single_next = 0;
@@ -339,6 +398,9 @@ dpdk_device_input (vlib_main_t * vm, dpdk_main_t * dm, dpdk_device_t * xd,
else
n_rx_bytes = dpdk_process_rx_burst (vm, ptd, n_rx_packets, 0, &or_flags);
+ if (PREDICT_FALSE ((or_flags & PKT_RX_LRO)))
+ dpdk_process_lro_offload (xd, ptd, n_rx_packets);
+
if (PREDICT_FALSE (or_flags & PKT_RX_FDIR))
{
/* some packets will need to go to different next nodes */