Re: [PATCH 5/7] drivers/net: fix unused but set variables

[David Marchand <david.marchand@redhat.com>]

Hello Ajit, Somnath,

On Fri, Nov 12, 2021 at 3:02 PM Conor Walsh <conor.walsh@intel.com> wrote:
>
> This patch fixes unused but set variables in the following net drivers:
>  - bnxt
>  - hinic
>  - liquidio
>  - nfp
>  - octeontx
>  - qede
>  - txgbe
>  - vmxnet3
>
> This patch also fixes an unused function warning for vmxnet3_unmap_pkt
> from within vmxnet3
>
> Bugzilla ID: 881
>
> Fixes: b87abb2e55cb ("net/bnxt: support marking packet")
> Fixes: 88badb3aef94 ("net/bnxt: add helper functions for blob/regfile ops")
> Fixes: a4957d87e05a ("net/hinic/base: add mgmt module")
> Fixes: 5ee7640f95a0 ("net/liquidio: add API to flush IQ")
> Fixes: 19af5a38f7b6 ("net/nfp: move CPP bridge to separate file")
> Fixes: 9eb5cb3b11cc ("net/octeontx: fix access to indirect buffers")
> Fixes: 86a2265e59d7 ("qede: add SRIOV support")
> Fixes: b7311360fb67 ("net/txgbe: support VF interrupt")
> Fixes: c3ecdbb376da ("vmxnet3: support TSO")
>
> Signed-off-by: Conor Walsh <conor.walsh@intel.com>
> Reported-by: Liang Longfeng <longfengx.liang@intel.com>
> ---
>  drivers/net/bnxt/bnxt_rxr.c             | 22 ----------------------
>  drivers/net/bnxt/tf_ulp/ulp_utils.c     |  3 ---
>  drivers/net/hinic/base/hinic_pmd_mgmt.c |  6 ------
>  drivers/net/liquidio/lio_rxtx.c         |  2 --
>  drivers/net/nfp/nfp_cpp_bridge.c        |  6 ++----
>  drivers/net/octeontx/octeontx_rxtx.h    |  3 +--
>  drivers/net/qede/base/ecore_vf.c        |  5 +----
>  drivers/net/txgbe/txgbe_ethdev_vf.c     |  2 ++
>  drivers/net/vmxnet3/vmxnet3_rxtx.c      |  8 ++++++++
>  9 files changed, 14 insertions(+), 43 deletions(-)
>
> diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c
> index 8bc8ddc353..157297bc64 100644
> --- a/drivers/net/bnxt/bnxt_rxr.c
> +++ b/drivers/net/bnxt/bnxt_rxr.c
> @@ -823,9 +823,6 @@ void bnxt_set_mark_in_mbuf(struct bnxt *bp,
>                            struct rte_mbuf *mbuf)
>  {
>         uint32_t cfa_code = 0;
> -       uint8_t meta_fmt = 0;
> -       uint16_t flags2 = 0;
> -       uint32_t meta =  0;
>
>         cfa_code = rte_le_to_cpu_16(rxcmp1->cfa_code);
>         if (!cfa_code)
> @@ -834,25 +831,6 @@ void bnxt_set_mark_in_mbuf(struct bnxt *bp,
>         if (cfa_code && !bp->mark_table[cfa_code].valid)
>                 return;
>
> -       flags2 = rte_le_to_cpu_16(rxcmp1->flags2);
> -       meta = rte_le_to_cpu_32(rxcmp1->metadata);
> -       if (meta) {
> -               meta >>= BNXT_RX_META_CFA_CODE_SHIFT;
> -
> -               /* The flags field holds extra bits of info from [6:4]
> -                * which indicate if the flow is in TCAM or EM or EEM
> -                */
> -               meta_fmt = (flags2 & BNXT_CFA_META_FMT_MASK) >>
> -                          BNXT_CFA_META_FMT_SHFT;
> -
> -               /* meta_fmt == 4 => 'b100 => 'b10x => EM.
> -                * meta_fmt == 5 => 'b101 => 'b10x => EM + VLAN
> -                * meta_fmt == 6 => 'b110 => 'b11x => EEM
> -                * meta_fmt == 7 => 'b111 => 'b11x => EEM + VLAN.
> -                */
> -               meta_fmt >>= BNXT_CFA_META_FMT_EM_EEM_SHFT;
> -       }
> -
>         mbuf->hash.fdir.hi = bp->mark_table[cfa_code].mark_id;
>         mbuf->ol_flags |= RTE_MBUF_F_RX_FDIR | RTE_MBUF_F_RX_FDIR_ID;
>  }
> diff --git a/drivers/net/bnxt/tf_ulp/ulp_utils.c b/drivers/net/bnxt/tf_ulp/ulp_utils.c
> index df3afaa6fd..c60d81d14a 100644
> --- a/drivers/net/bnxt/tf_ulp/ulp_utils.c
> +++ b/drivers/net/bnxt/tf_ulp/ulp_utils.c
> @@ -200,7 +200,6 @@ ulp_bs_push_msb(uint8_t *bs, uint16_t pos, uint8_t len, uint8_t *val)
>  {
>         int i;
>         int cnt = (len + 7) / 8;
> -       int tlen = len;
>
>         /* Handle any remainder bits */
>         int tmp = len % 8;
> @@ -211,12 +210,10 @@ ulp_bs_push_msb(uint8_t *bs, uint16_t pos, uint8_t len, uint8_t *val)
>         ulp_bs_put_msb(bs, pos, tmp, val[0]);
>
>         pos += tmp;
> -       tlen -= tmp;
>
>         for (i = 1; i < cnt; i++) {
>                 ulp_bs_put_msb(bs, pos, 8, val[i]);
>                 pos += 8;
> -               tlen -= 8;
>         }
>
>         return len;

Review please.


-- 
David Marchand