From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bruce Richardson Subject: Re: [PATCH] ixgbe: change assignation of bitfields to fix clang compilation Date: Mon, 1 Dec 2014 10:52:50 +0000 Message-ID: <20141201105250.GA4856@bricha3-MOBL3> References: <1417430173-24502-1-git-send-email-olivier.matz@6wind.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: dev-VfR2kkLFssw@public.gmane.org To: Olivier Matz Return-path: Content-Disposition: inline In-Reply-To: <1417430173-24502-1-git-send-email-olivier.matz-pdR9zngts4EAvxtiuMwx3w@public.gmane.org> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" On Mon, Dec 01, 2014 at 11:36:13AM +0100, Olivier Matz wrote: > Commit 1224decaa44b3dba58e0a524fd0383969929c575 changed the way > the bitfields are assigned in ixgbe, example: > > tx_offload_mask.l2_len = ~0; > > This result in a compilation error with clang: > > error: implicit truncation from 'int' to bitfield > changes value from -1 to 127 [-Werror,-Wbitfield-constant-conversion] > > Replacing the '=' with a '|=' fixes the issue. > > Signed-off-by: Olivier Matz Acked-by: Bruce Richardson > --- > lib/librte_pmd_ixgbe/ixgbe_rxtx.c | 28 ++++++++++++++-------------- > 1 file changed, 14 insertions(+), 14 deletions(-) > > diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c > index 8559ef6..5c36bff 100644 > --- a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c > +++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c > @@ -381,7 +381,7 @@ ixgbe_set_xmit_ctx(struct igb_tx_queue* txq, > mss_l4len_idx |= (ctx_idx << IXGBE_ADVTXD_IDX_SHIFT); > > if (ol_flags & PKT_TX_VLAN_PKT) { > - tx_offload_mask.vlan_tci = ~0; > + tx_offload_mask.vlan_tci |= ~0; > } > > /* check if TCP segmentation required for this packet */ > @@ -391,17 +391,17 @@ ixgbe_set_xmit_ctx(struct igb_tx_queue* txq, > IXGBE_ADVTXD_TUCMD_L4T_TCP | > IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT; > > - tx_offload_mask.l2_len = ~0; > - tx_offload_mask.l3_len = ~0; > - tx_offload_mask.l4_len = ~0; > - tx_offload_mask.tso_segsz = ~0; > + tx_offload_mask.l2_len |= ~0; > + tx_offload_mask.l3_len |= ~0; > + tx_offload_mask.l4_len |= ~0; > + tx_offload_mask.tso_segsz |= ~0; > mss_l4len_idx |= tx_offload.tso_segsz << IXGBE_ADVTXD_MSS_SHIFT; > mss_l4len_idx |= tx_offload.l4_len << IXGBE_ADVTXD_L4LEN_SHIFT; > } else { /* no TSO, check if hardware checksum is needed */ > if (ol_flags & PKT_TX_IP_CKSUM) { > type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV4; > - tx_offload_mask.l2_len = ~0; > - tx_offload_mask.l3_len = ~0; > + tx_offload_mask.l2_len |= ~0; > + tx_offload_mask.l3_len |= ~0; > } > > switch (ol_flags & PKT_TX_L4_MASK) { > @@ -409,23 +409,23 @@ ixgbe_set_xmit_ctx(struct igb_tx_queue* txq, > type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_UDP | > IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT; > mss_l4len_idx |= sizeof(struct udp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT; > - tx_offload_mask.l2_len = ~0; > - tx_offload_mask.l3_len = ~0; > + tx_offload_mask.l2_len |= ~0; > + tx_offload_mask.l3_len |= ~0; > break; > case PKT_TX_TCP_CKSUM: > type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP | > IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT; > mss_l4len_idx |= sizeof(struct tcp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT; > - tx_offload_mask.l2_len = ~0; > - tx_offload_mask.l3_len = ~0; > - tx_offload_mask.l4_len = ~0; > + tx_offload_mask.l2_len |= ~0; > + tx_offload_mask.l3_len |= ~0; > + tx_offload_mask.l4_len |= ~0; > break; > case PKT_TX_SCTP_CKSUM: > type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_SCTP | > IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT; > mss_l4len_idx |= sizeof(struct sctp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT; > - tx_offload_mask.l2_len = ~0; > - tx_offload_mask.l3_len = ~0; > + tx_offload_mask.l2_len |= ~0; > + tx_offload_mask.l3_len |= ~0; > break; > default: > type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_RSV | > -- > 2.1.0 >