[dpdk-dev] [PATCH v2 55/62] net/cnxk: add base PTP timesync support
Pavan Nikhilesh Bhagavatula
pbhagavatula at marvell.com
Tue Jun 8 14:04:45 CEST 2021
<snip>
>
>+static __rte_always_inline void
>+cn10k_nix_xmit_prepare_tstamp(uintptr_t lmt_addr, const uint64_t
>*cmd,
>+ const uint64_t ol_flags, const uint16_t
>no_segdw,
>+ const uint16_t flags)
>+{
>+ if (flags & NIX_TX_OFFLOAD_TSTAMP_F) {
>+ const uint8_t is_ol_tstamp = !(ol_flags &
>PKT_TX_IEEE1588_TMST);
>+ struct nix_send_ext_s *send_hdr_ext =
>+ (struct nix_send_ext_s
>*)lmt_addr + 16;
>+ uint64_t *lmt = (uint64_t *)lmt_addr;
>+ uint16_t off = (no_segdw - 1) << 1;
>+ struct nix_send_mem_s *send_mem;
>+
>+ send_mem = (struct nix_send_mem_s *)(lmt + off);
>+ send_hdr_ext->w0.subdc = NIX_SUBDC_EXT;
>+ send_hdr_ext->w0.tstmp = 1;
>+ if (flags & NIX_TX_MULTI_SEG_F) {
>+ /* Retrieving the default desc values */
>+ lmt[off] = cmd[2];
>+
>+ /* Using compiler barier to avoid voilation of C
>+ * aliasing rules.
>+ */
>+ rte_compiler_barrier();
>+ }
>+
>+ /* Packets for which PKT_TX_IEEE1588_TMST is not set,
>tx tstamp
>+ * should not be recorded, hence changing the alg type
>to
>+ * NIX_SENDMEMALG_SET and also changing send mem
>addr field to
>+ * next 8 bytes as it corrpt the actual tx tstamp
>registered
>+ * address.
>+ */
>+ send_mem->w0.subdc = NIX_SUBDC_MEM;
>+ send_mem->w0.alg = NIX_SENDMEMALG_SETTSTMP -
>(is_ol_tstamp);
>+ send_mem->addr = (rte_iova_t)((uint64_t *)cmd[3]);
Missing address increment for non-tstmp packets here.
>+ }
>+}
>+
<snip>
> static __rte_always_inline void
>+cn9k_nix_xmit_prepare_tstamp(uint64_t *cmd, const uint64_t
>*send_mem_desc,
>+ const uint64_t ol_flags, const uint16_t
>no_segdw,
>+ const uint16_t flags)
>+{
>+ if (flags & NIX_TX_OFFLOAD_TSTAMP_F) {
>+ struct nix_send_mem_s *send_mem;
>+ uint16_t off = (no_segdw - 1) << 1;
>+ const uint8_t is_ol_tstamp = !(ol_flags &
>PKT_TX_IEEE1588_TMST);
>+
>+ send_mem = (struct nix_send_mem_s *)(cmd + off);
>+ if (flags & NIX_TX_MULTI_SEG_F) {
>+ /* Retrieving the default desc values */
>+ cmd[off] = send_mem_desc[6];
>+
>+ /* Using compiler barier to avoid voilation of C
>+ * aliasing rules.
>+ */
>+ rte_compiler_barrier();
>+ }
>+
>+ /* Packets for which PKT_TX_IEEE1588_TMST is not set,
>tx tstamp
>+ * should not be recorded, hence changing the alg type
>to
>+ * NIX_SENDMEMALG_SET and also changing send mem
>addr field to
>+ * next 8 bytes as it corrpt the actual tx tstamp
>registered
>+ * address.
>+ */
>+ send_mem->w0.cn9k.alg =
>+ NIX_SENDMEMALG_SETTSTMP -
>(is_ol_tstamp);
>+
>+ send_mem->addr = (rte_iova_t)((uint64_t
>*)send_mem_desc[7] +
>+ (is_ol_tstamp));
Need to increment by at-least 8 bytes.
>+ }
>+}
>+
<snip>
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