On Mon 20 May 06:53 PDT 2019, Alex Elder wrote: > Replace the use of C bit-fields in the rmnet_map_dl_csum_trailer > structure with a single integral field, using field masks to > encode or get at sub-field values. > > Signed-off-by: Alex Elder <[email protected]> > --- > drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h | 6 ++++-- > drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c | 2 +- > 2 files changed, 5 insertions(+), 3 deletions(-) > > diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h > b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h > index f3231c26badd..fb1cdb4ec41f 100644 > --- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h > +++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h > @@ -51,13 +51,15 @@ struct rmnet_map_header { > > struct rmnet_map_dl_csum_trailer { > u8 reserved1; > - u8 valid:1; > - u8 reserved2:7; > + u8 flags; /* RMNET_MAP_DL_* */ > u16 csum_start_offset; > u16 csum_length; > __be16 csum_value; > } __aligned(1); > > +#define RMNET_MAP_DL_CSUM_VALID_FMASK GENMASK(0, 0) > +#define RMNET_MAP_DL_RESERVED_FMASK GENMASK(7, 1)
I presume that the reserved define won't ever be referenced, but it's good to have it "documented". Reviewed-by: Bjorn Andersson <[email protected]> Regards, Bjorn > + > struct rmnet_map_ul_csum_header { > __be16 csum_start_offset; > __be16 csum_info; /* RMNET_MAP_UL_* */ > diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c > b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c > index 72b64114505a..a95111cdcd29 100644 > --- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c > +++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c > @@ -362,7 +362,7 @@ int rmnet_map_checksum_downlink_packet(struct sk_buff > *skb, u16 len) > > csum_trailer = (struct rmnet_map_dl_csum_trailer *)(skb->data + len); > > - if (!csum_trailer->valid) { > + if (!u8_get_bits(csum_trailer->flags, RMNET_MAP_DL_CSUM_VALID_FMASK)) { > priv->stats.csum_valid_unset++; > return -EINVAL; > } > -- > 2.20.1 >
