diff options
| author | Haiyang Zhang <haiyangz@microsoft.com> | 2023-04-12 23:16:03 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-04-14 09:56:19 +0200 |
| commit | 80f6215b450eb8e92d8b1f117abf5ecf867f963e (patch) | |
| tree | 24070c4dc05d955628cf2b844f7655bd4c1c954f /include/net/mana | |
| parent | net: mana: Enable RX path to handle various MTU sizes (diff) | |
| download | linux-80f6215b450eb8e92d8b1f117abf5ecf867f963e.tar.xz linux-80f6215b450eb8e92d8b1f117abf5ecf867f963e.zip | |
net: mana: Add support for jumbo frame
During probe, get the hardware-allowed max MTU by querying the device
configuration. Users can select MTU up to the device limit.
When XDP is in use, limit MTU settings so the buffer size is within
one page. And, when MTU is set to a too large value, XDP is not allowed
to run.
Also, to prevent changing MTU fails, and leaves the NIC in a bad state,
pre-allocate all buffers before starting the change. So in low memory
condition, it will return error, without affecting the NIC.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/mana')
| -rw-r--r-- | include/net/mana/gdma.h | 4 | ||||
| -rw-r--r-- | include/net/mana/mana.h | 14 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h index 56189e4252da..96c120160f15 100644 --- a/include/net/mana/gdma.h +++ b/include/net/mana/gdma.h @@ -145,6 +145,7 @@ struct gdma_general_req { }; /* HW DATA */ #define GDMA_MESSAGE_V1 1 +#define GDMA_MESSAGE_V2 2 struct gdma_general_resp { struct gdma_resp_hdr hdr; @@ -354,6 +355,9 @@ struct gdma_context { struct gdma_resource msix_resource; struct gdma_irq_context *irq_contexts; + /* L2 MTU */ + u16 adapter_mtu; + /* This maps a CQ index to the queue structure. */ unsigned int max_num_cqs; struct gdma_queue **cq_table; diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h index fee99d704281..cd386aa7c7cc 100644 --- a/include/net/mana/mana.h +++ b/include/net/mana/mana.h @@ -37,6 +37,7 @@ enum TRI_STATE { #define COMP_ENTRY_SIZE 64 #define RX_BUFFERS_PER_QUEUE 512 +#define MANA_RX_DATA_ALIGN 64 #define MAX_SEND_BUFFERS_PER_QUEUE 256 @@ -390,6 +391,14 @@ struct mana_port_context { /* This points to an array of num_queues of RQ pointers. */ struct mana_rxq **rxqs; + /* pre-allocated rx buffer array */ + void **rxbufs_pre; + dma_addr_t *das_pre; + int rxbpre_total; + u32 rxbpre_datasize; + u32 rxbpre_alloc_size; + u32 rxbpre_headroom; + struct bpf_prog *bpf_prog; /* Create num_queues EQs, SQs, SQ-CQs, RQs and RQ-CQs, respectively. */ @@ -489,6 +498,11 @@ struct mana_query_device_cfg_resp { u16 max_num_vports; u16 reserved; u32 max_num_eqs; + + /* response v2: */ + u16 adapter_mtu; + u16 reserved2; + u32 reserved3; }; /* HW DATA */ /* Query vPort Configuration */ |