[v3] app/testpmd: perform SW IP checksum for GRO/GSO packets
Checks
Commit Message
The GRO/GSO library doesn't re-calculate checksums for
merged/fragmented packets. If users want the packets to
have correct IP checksums, they should select HW IP
checksum calculation for the port which the packets are
transmitted to. But if the port doesn't support HW IP
checksum, users may perform a SW IP checksum. This patch
add the code about it.
Fixes: b7091f1dcfbc ("app/testpmd: enable the heavyweight mode TCP/IPv4 GRO")
Fixes: 52f38a2055ed ("app/testpmd: enable TCP/IPv4 VxLAN and GRE GSO")
Cc: stable@dpdk.org
Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
---
app/test-pmd/csumonly.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
Comments
> -----Original Message-----
> From: Ma, WenwuX <wenwux.ma@intel.com>
> Sent: Thursday, May 12, 2022 9:08 AM
> To: Li, Xiaoyun <xiaoyun.li@intel.com>; Singh, Aman Deep
> <aman.deep.singh@intel.com>; Zhang, Yuying <yuying.zhang@intel.com>;
> dev@dpdk.org
> Cc: Hu, Jiayu <jiayu.hu@intel.com>; Wang, Yinan <yinan.wang@intel.com>;
> He, Xingguang <xingguang.he@intel.com>; Ma, WenwuX
> <wenwux.ma@intel.com>; stable@dpdk.org
> Subject: [PATCH v3] app/testpmd: perform SW IP checksum for GRO/GSO
> packets
>
> The GRO/GSO library doesn't re-calculate checksums for merged/fragmented
> packets. If users want the packets to have correct IP checksums, they should
> select HW IP checksum calculation for the port which the packets are
> transmitted to. But if the port doesn't support HW IP checksum, users may
> perform a SW IP checksum. This patch add the code about it.
>
> Fixes: b7091f1dcfbc ("app/testpmd: enable the heavyweight mode TCP/IPv4
> GRO")
> Fixes: 52f38a2055ed ("app/testpmd: enable TCP/IPv4 VxLAN and GRE GSO")
> Cc: stable@dpdk.org
>
> Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
> ---
> app/test-pmd/csumonly.c | 26 ++++++++++++++++++++++++++
> 1 file changed, 26 insertions(+)
>
> diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c index
> 8b6665d6f3..2498ee88a2 100644
> --- a/app/test-pmd/csumonly.c
> +++ b/app/test-pmd/csumonly.c
> @@ -778,6 +778,28 @@ pkt_copy_split(const struct rte_mbuf *pkt)
> return md[0];
> }
>
> +#if defined(RTE_LIB_GRO) || defined(RTE_LIB_GSO)
> +/*
> + * Re-calculate IP checksum for merged/fragmented packets.
> + */
> +static void
> +pkts_ip_csum_recalc(struct rte_mbuf **pkts_burst, const uint16_t
> +nb_pkts, uint64_t tx_offloads) {
> + int i;
> + struct rte_ipv4_hdr *ipv4_hdr;
> + for (i = 0; i < nb_pkts; i++) {
> + if ((pkts_burst[i]->ol_flags & RTE_MBUF_F_TX_IPV4) &&
> + (tx_offloads & RTE_ETH_TX_OFFLOAD_IPV4_CKSUM)
> == 0) {
> + ipv4_hdr = rte_pktmbuf_mtod_offset(pkts_burst[i],
> + struct rte_ipv4_hdr *,
> + pkts_burst[i]->l2_len);
> + ipv4_hdr->hdr_checksum = 0;
> + ipv4_hdr->hdr_checksum =
> rte_ipv4_cksum(ipv4_hdr);
> + }
> + }
> +}
> +#endif
> +
> /*
> * Receive a burst of packets, and for each packet:
> * - parse packet, and try to recognize a supported packet type (1) @@ -
> 1098,6 +1120,8 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
> fs->gro_times = 0;
> }
> }
> +
> + pkts_ip_csum_recalc(pkts_burst, nb_rx, tx_offloads);
> }
> #endif
>
> @@ -1131,6 +1155,8 @@ pkt_burst_checksum_forward(struct fwd_stream
> *fs)
>
> tx_pkts_burst = gso_segments;
> nb_rx = nb_segments;
> +
> + pkts_ip_csum_recalc(tx_pkts_burst, nb_rx, tx_offloads);
> } else
> #endif
> tx_pkts_burst = pkts_burst;
> --
> 2.25.1
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
Thanks,
Jiayu
> -----Original Message-----
> From: Wenwu Ma <wenwux.ma@intel.com>
> Sent: Thursday, May 12, 2022 9:08 AM
> To: Li, Xiaoyun <xiaoyun.li@intel.com>; Singh, Aman Deep
> <aman.deep.singh@intel.com>; Zhang, Yuying <yuying.zhang@intel.com>;
> dev@dpdk.org
> Cc: Hu, Jiayu <jiayu.hu@intel.com>; Wang, Yinan <yinan.wang@intel.com>;
> He, Xingguang <xingguang.he@intel.com>; Ma, WenwuX
> <wenwux.ma@intel.com>; stable@dpdk.org
> Subject: [PATCH v3] app/testpmd: perform SW IP checksum for GRO/GSO
> packets
>
> The GRO/GSO library doesn't re-calculate checksums for
> merged/fragmented packets. If users want the packets to have correct IP
> checksums, they should select HW IP checksum calculation for the port which
> the packets are transmitted to. But if the port doesn't support HW IP
> checksum, users may perform a SW IP checksum. This patch add the code
> about it.
>
> Fixes: b7091f1dcfbc ("app/testpmd: enable the heavyweight mode TCP/IPv4
> GRO")
> Fixes: 52f38a2055ed ("app/testpmd: enable TCP/IPv4 VxLAN and GRE GSO")
> Cc: stable@dpdk.org
>
> Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
> ---
Tested-by: Wei Ling <weix.ling@intel.com>
Hi Wenwu,
LGTM.
> -----Original Message-----
> From: Ma, WenwuX <wenwux.ma@intel.com>
> Sent: Thursday, May 12, 2022 9:08 AM
> To: Li, Xiaoyun <xiaoyun.li@intel.com>; Singh, Aman Deep
> <aman.deep.singh@intel.com>; Zhang, Yuying <yuying.zhang@intel.com>;
> dev@dpdk.org
> Cc: Hu, Jiayu <jiayu.hu@intel.com>; Wang, Yinan <yinan.wang@intel.com>;
> He, Xingguang <xingguang.he@intel.com>; Ma, WenwuX
> <wenwux.ma@intel.com>; stable@dpdk.org
> Subject: [PATCH v3] app/testpmd: perform SW IP checksum for GRO/GSO
> packets
>
> The GRO/GSO library doesn't re-calculate checksums for merged/fragmented
> packets. If users want the packets to have correct IP checksums, they should
> select HW IP checksum calculation for the port which the packets are
> transmitted to. But if the port doesn't support HW IP checksum, users may
> perform a SW IP checksum. This patch add the code about it.
>
> Fixes: b7091f1dcfbc ("app/testpmd: enable the heavyweight mode TCP/IPv4
> GRO")
> Fixes: 52f38a2055ed ("app/testpmd: enable TCP/IPv4 VxLAN and GRE GSO")
> Cc: stable@dpdk.org
>
> Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
Acked-by: Yuying Zhang <yuying.zhang@intel.com>
> ---
> app/test-pmd/csumonly.c | 26 ++++++++++++++++++++++++++
> 1 file changed, 26 insertions(+)
>
> diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c index
> 8b6665d6f3..2498ee88a2 100644
> --- a/app/test-pmd/csumonly.c
> +++ b/app/test-pmd/csumonly.c
> @@ -778,6 +778,28 @@ pkt_copy_split(const struct rte_mbuf *pkt)
> return md[0];
> }
>
> +#if defined(RTE_LIB_GRO) || defined(RTE_LIB_GSO)
> +/*
> + * Re-calculate IP checksum for merged/fragmented packets.
> + */
> +static void
> +pkts_ip_csum_recalc(struct rte_mbuf **pkts_burst, const uint16_t
> +nb_pkts, uint64_t tx_offloads) {
> + int i;
> + struct rte_ipv4_hdr *ipv4_hdr;
> + for (i = 0; i < nb_pkts; i++) {
> + if ((pkts_burst[i]->ol_flags & RTE_MBUF_F_TX_IPV4) &&
> + (tx_offloads & RTE_ETH_TX_OFFLOAD_IPV4_CKSUM)
> == 0) {
> + ipv4_hdr = rte_pktmbuf_mtod_offset(pkts_burst[i],
> + struct rte_ipv4_hdr *,
> + pkts_burst[i]->l2_len);
> + ipv4_hdr->hdr_checksum = 0;
> + ipv4_hdr->hdr_checksum =
> rte_ipv4_cksum(ipv4_hdr);
> + }
> + }
> +}
> +#endif
> +
> /*
> * Receive a burst of packets, and for each packet:
> * - parse packet, and try to recognize a supported packet type (1) @@ -
> 1098,6 +1120,8 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
> fs->gro_times = 0;
> }
> }
> +
> + pkts_ip_csum_recalc(pkts_burst, nb_rx, tx_offloads);
> }
> #endif
>
> @@ -1131,6 +1155,8 @@ pkt_burst_checksum_forward(struct fwd_stream
> *fs)
>
> tx_pkts_burst = gso_segments;
> nb_rx = nb_segments;
> +
> + pkts_ip_csum_recalc(tx_pkts_burst, nb_rx, tx_offloads);
> } else
> #endif
> tx_pkts_burst = pkts_burst;
> --
> 2.25.1
On 5/17/22 19:02, Zhang, Yuying wrote:
> Hi Wenwu,
> LGTM.
>
>> -----Original Message-----
>> From: Ma, WenwuX <wenwux.ma@intel.com>
>> Sent: Thursday, May 12, 2022 9:08 AM
>> To: Li, Xiaoyun <xiaoyun.li@intel.com>; Singh, Aman Deep
>> <aman.deep.singh@intel.com>; Zhang, Yuying <yuying.zhang@intel.com>;
>> dev@dpdk.org
>> Cc: Hu, Jiayu <jiayu.hu@intel.com>; Wang, Yinan <yinan.wang@intel.com>;
>> He, Xingguang <xingguang.he@intel.com>; Ma, WenwuX
>> <wenwux.ma@intel.com>; stable@dpdk.org
>> Subject: [PATCH v3] app/testpmd: perform SW IP checksum for GRO/GSO
>> packets
>>
>> The GRO/GSO library doesn't re-calculate checksums for merged/fragmented
>> packets. If users want the packets to have correct IP checksums, they should
>> select HW IP checksum calculation for the port which the packets are
>> transmitted to. But if the port doesn't support HW IP checksum, users may
>> perform a SW IP checksum. This patch add the code about it.
>>
>> Fixes: b7091f1dcfbc ("app/testpmd: enable the heavyweight mode TCP/IPv4
>> GRO")
>> Fixes: 52f38a2055ed ("app/testpmd: enable TCP/IPv4 VxLAN and GRE GSO")
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
>
> Acked-by: Yuying Zhang <yuying.zhang@intel.com>
Since CI is happy with the patch now [1].
[1] https://lab.dpdk.org/results/dashboard/patchsets/22087/
Applied, thanks.
@@ -778,6 +778,28 @@ pkt_copy_split(const struct rte_mbuf *pkt)
return md[0];
}
+#if defined(RTE_LIB_GRO) || defined(RTE_LIB_GSO)
+/*
+ * Re-calculate IP checksum for merged/fragmented packets.
+ */
+static void
+pkts_ip_csum_recalc(struct rte_mbuf **pkts_burst, const uint16_t nb_pkts, uint64_t tx_offloads)
+{
+ int i;
+ struct rte_ipv4_hdr *ipv4_hdr;
+ for (i = 0; i < nb_pkts; i++) {
+ if ((pkts_burst[i]->ol_flags & RTE_MBUF_F_TX_IPV4) &&
+ (tx_offloads & RTE_ETH_TX_OFFLOAD_IPV4_CKSUM) == 0) {
+ ipv4_hdr = rte_pktmbuf_mtod_offset(pkts_burst[i],
+ struct rte_ipv4_hdr *,
+ pkts_burst[i]->l2_len);
+ ipv4_hdr->hdr_checksum = 0;
+ ipv4_hdr->hdr_checksum = rte_ipv4_cksum(ipv4_hdr);
+ }
+ }
+}
+#endif
+
/*
* Receive a burst of packets, and for each packet:
* - parse packet, and try to recognize a supported packet type (1)
@@ -1098,6 +1120,8 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
fs->gro_times = 0;
}
}
+
+ pkts_ip_csum_recalc(pkts_burst, nb_rx, tx_offloads);
}
#endif
@@ -1131,6 +1155,8 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
tx_pkts_burst = gso_segments;
nb_rx = nb_segments;
+
+ pkts_ip_csum_recalc(tx_pkts_burst, nb_rx, tx_offloads);
} else
#endif
tx_pkts_burst = pkts_burst;