xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sfc: perform XDP processing on received packets

Browse Source 
Adds a field to hold an attached xdp_prog, but never populates it (see
following patch).  Also, XDP_TX support is deferred to a later patch
in the series.

Track failures of xdp_rxq_info_reg() via per-queue xdp_rxq_info_valid
flags and a per-nic xdp_rxq_info_failed flag. The per-queue flags are
needed to prevent attempts to xdp_rxq_info_unreg() structs that failed
to register.  Possibly the API could be changed in the future to avoid
the need for these flags.

Signed-off-by: Charles McLachlan <cmclachlan@solarflare.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Charles McLachlan
2019-10-31 10:23:23 +00:00
committed by David S. Miller
parent 8c42350116
commit eb9a36be7f
3 changed files with 145 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/net/ethernet/sfc/net_driver.h
View File

@@ -369,6 +369,8 @@ struct efx_rx_page_state {
* refill was triggered.
* @recycle_count: RX buffer recycle counter.
* @slow_fill: Timer used to defer efx_nic_generate_fill_event().
* @xdp_rxq_info: XDP specific RX queue information.
* @xdp_rxq_info_valid: Is xdp_rxq_info valid data?.
*/
struct efx_rx_queue {
struct efx_nic *efx;
@@ -400,6 +402,8 @@ struct efx_rx_queue {
unsigned int slow_fill_count;
/* Statistics to supplement MAC stats */
unsigned long rx_packets;
struct xdp_rxq_info xdp_rxq_info;
bool xdp_rxq_info_valid;
};
enum efx_sync_events_state {
@@ -900,6 +904,7 @@ struct efx_async_filter_insertion {
* @loopback_mode: Loopback status
* @loopback_modes: Supported loopback mode bitmask
* @loopback_selftest: Offline self-test private state
* @xdp_prog: Current XDP programme for this interface
* @filter_sem: Filter table rw_semaphore, protects existence of @filter_state
* @filter_state: Architecture-dependent filter table state
* @rps_mutex: Protects RPS state of all channels
@@ -925,6 +930,8 @@ struct efx_async_filter_insertion {
* @ptp_data: PTP state data
* @ptp_warned: has this NIC seen and warned about unexpected PTP events?
* @vpd_sn: Serial number read from VPD
* @xdp_rxq_info_failed: Have any of the rx queues failed to initialise their
* xdp_rxq_info structures?
* @monitor_work: Hardware monitor workitem
* @biu_lock: BIU (bus interface unit) lock
* @last_irq_cpu: Last CPU to handle a possible test interrupt. This
@@ -1059,6 +1066,10 @@ struct efx_nic {
u64 loopback_modes;
void *loopback_selftest;
/* We access loopback_selftest immediately before running XDP,
* so we want them next to each other.
*/
struct bpf_prog __rcu *xdp_prog;
struct rw_semaphore filter_sem;
void *filter_state;
@@ -1088,6 +1099,7 @@ struct efx_nic {
bool ptp_warned;
char *vpd_sn;
bool xdp_rxq_info_failed;
/* The following fields may be written more often */