> -----Original Message-----
> From: lng-odp [mailto:lng-odp-boun...@lists.linaro.org] On Behalf Of EXT Maxim
> Uvarov
> Sent: Monday, October 26, 2015 11:36 AM
> To: lng-odp@lists.linaro.org
> Subject: Re: [lng-odp] [PATCH v6 6/6] test: l2fwd: word copy ethernet 
> addresses
> 
> On 10/23/2015 16:01, Matias Elo wrote:
> > Optimize ethernet address filling by using word copy.
> >
> > Signed-off-by: Matias Elo <matias....@nokia.com>
> > ---
> >   test/performance/odp_l2fwd.c | 57
> ++++++++++++++++++++++++++++++++++----------
> >   1 file changed, 45 insertions(+), 12 deletions(-)
> >
> > diff --git a/test/performance/odp_l2fwd.c b/test/performance/odp_l2fwd.c
> > index fb5f656..4e371a1 100644
> > --- a/test/performance/odp_l2fwd.c
> > +++ b/test/performance/odp_l2fwd.c
> > @@ -92,6 +92,14 @@ typedef struct {
> >   } thread_args_t;
> >
> >   /**
> > + * Optimized type for storing ethernet addresses
> > + */
> > +typedef union {
> > +   uint8_t u8[6];
> > +   uint16_t u16[3];
> > +} eth_addr_t;
> > +
> > +/**
> >    * Grouping of all global data
> >    */
> >   typedef struct {
> > @@ -102,9 +110,9 @@ typedef struct {
> >     /** Table of pktio handles */
> >     odp_pktio_t pktios[ODP_CONFIG_PKTIO_ENTRIES];
> >     /** Table of port ethernet addresses */
> > -   odph_ethaddr_t port_eth_addr[ODP_CONFIG_PKTIO_ENTRIES];
> > +   eth_addr_t port_eth_addr[ODP_CONFIG_PKTIO_ENTRIES];
> >     /** Table of dst ethernet addresses */
> > -   odph_ethaddr_t dst_eth_addr[ODP_CONFIG_PKTIO_ENTRIES];
> > +   eth_addr_t dst_eth_addr[ODP_CONFIG_PKTIO_ENTRIES];
> >     /** Table of port default output queues */
> >     odp_queue_t outq_def[ODP_CONFIG_PKTIO_ENTRIES];
> >     /** Table of dst ports */
> > @@ -433,7 +441,7 @@ int main(int argc, char *argv[])
> >     odp_shm_t shm;
> >     odp_cpumask_t cpumask;
> >     char cpumaskstr[ODP_CPUMASK_STR_SIZE];
> > -   odph_ethaddr_t new_addr;
> > +   eth_addr_t new_addr;
> >     odp_pktio_t pktio;
> >     odp_pool_param_t params;
> >     int ret;
> > @@ -508,7 +516,7 @@ int main(int argc, char *argv[])
> >             gbl_args->pktios[i] = pktio;
> >
> >             /* Save interface ethernet address */
> > -           if (odp_pktio_mac_addr(pktio, gbl_args->port_eth_addr[i].addr,
> > +           if (odp_pktio_mac_addr(pktio, gbl_args->port_eth_addr[i].u8,
> >                                    ODPH_ETHADDR_LEN) !=
> ODPH_ETHADDR_LEN) {
> >                     LOG_ERR("Error: interface ethernet address
> unknown\n");
> >                     exit(EXIT_FAILURE);
> > @@ -521,9 +529,9 @@ int main(int argc, char *argv[])
> >             /* Save destination eth address */
> >             if (gbl_args->appl.dst_change) {
> >                     /* 02:00:00:00:00:XX */
> > -                   memset(&new_addr, 0, sizeof(odph_ethaddr_t));
> > -                   new_addr.addr[0] = 0x02;
> > -                   new_addr.addr[5] = i;
> > +                   memset(&new_addr, 0, sizeof(eth_addr_t));
> > +                   new_addr.u8[0] = 0x02;
> > +                   new_addr.u8[5] = i;
> >                     gbl_args->dst_eth_addr[i] = new_addr;
> >             }
> >
> > @@ -615,6 +623,24 @@ static int drop_err_pkts(odp_packet_t pkt_tbl[],
> unsigned len)
> >   }
> >
> >   /**
> > + * Word copy ethernet address
> > + *
> > + * @param to       Destination memory address
> > + * @param from     Source memory address
> > + */
> > +static void copy_eth_addr(uint16_t *to, uint16_t *from)
> > +{
> > +   uint16_t fw0, fw1, fw2;
> > +
> > +   fw0 = from[0];
> > +   fw1 = from[1];
> > +   fw2 = from[2];
> > +   to[0] = fw0;
> > +   to[1] = fw1;
> > +   to[2] = fw2;
> > +}
> > +
> > +/**
> >    * Fill packets' eth addresses according to the destination port
> >    *
> >    * @param pkt_tbl  Array of packets
> > @@ -626,6 +652,8 @@ static void fill_eth_addrs(odp_packet_t pkt_tbl[],
> unsigned num, int dst_port)
> >     odp_packet_t pkt;
> >     odph_ethhdr_t *eth;
> >     unsigned i;
> > +   uint16_t *to;
> > +   uint16_t *from;
> >
> >     if (!gbl_args->appl.dst_change && !gbl_args->appl.src_change)
> >             return;
> > @@ -635,11 +663,16 @@ static void fill_eth_addrs(odp_packet_t pkt_tbl[],
> unsigned num, int dst_port)
> >             if (odp_packet_has_eth(pkt)) {
> >                     eth = (odph_ethhdr_t *)odp_packet_l2_ptr(pkt, NULL);
> >
> > -                   if (gbl_args->appl.src_change)
> > -                           eth->src = gbl_args->port_eth_addr[dst_port];
> > -
> > -                   if (gbl_args->appl.dst_change)
> > -                           eth->dst = gbl_args->dst_eth_addr[dst_port];
> > +                   if (gbl_args->appl.src_change) {
> > +                           from = gbl_args->port_eth_addr[dst_port].u16;
> > +                           to = (uint16_t *)eth->src.addr;
> > +                           copy_eth_addr(to, from);
> > +                   }
> > +                   if (gbl_args->appl.dst_change) {
> > +                           from = gbl_args->dst_eth_addr[dst_port].u16;
> > +                           to = (uint16_t *)eth->dst.addr;
> Please fix arm build:
> 
> http://releases.linaro.org/15.02/components/toolchain/binaries/arm-linux-
> gnueabihf/gcc-linaro-4.9-2015.02-3-x86_64_arm-linux-gnueabihf.tar.xz
> 
> odp_l2fwd.c: In function 'fill_eth_addrs':
> odp_l2fwd.c:668:10: error: cast increases required alignment of target
> type [-Werror=cast-align]
>       to = (uint16_t *)eth->src.addr;
>            ^
> odp_l2fwd.c:673:10: error: cast increases required alignment of target
> type [-Werror=cast-align]
>       to = (uint16_t *)eth->dst.addr;
> 
> Something like:
> to = (uint16_t *)&eth->dst.addr;
> 
> Maxim.

Could you merge just the five first commit now? Let's forget the last commit 
for now and fix it later.

-Matias

> 
> 
> > +                           copy_eth_addr(to, from);
> > +                   }
> >             }
> >     }
> >   }
> 
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