[dpdk-dev] [PATCH] net/bnxt: fix build with gcc10 default fno-common

[Ajit Khaparde]

On Tue, May 5, 2020 at 7:56 AM Kevin Traynor <ktraynor at redhat.com> wrote:

> On 05/05/2020 05:03, Ajit Khaparde wrote:
> > From: Randy Schacher <stuart.schacher at broadcom.com>
> >
> > Remove the defensive compile-time checker macro.
> >
>
> Thanks Ajit/Randy. This removes the error for bnxt on my Fedora 32 system.
>
> Was chatting to David and he suggest if 'static __rte_used' could be
> added to the macro as an alternative.
>
> Checked and it [1] is working also. It seems like a cleaner fix for the
> specific issue to me. If you have an additional reason to remove the
> compile checks, it could be a separate patch or a comment added to the
> commit message.
>
Kevin, Thanks for confirming that the patch solves the issue.
I wanted to do away with the check anyway.
Thanks for suggesting the change though.


> [1]
> --- a/drivers/net/bnxt/tf_core/hwrm_tf.h
> +++ b/drivers/net/bnxt/tf_core/hwrm_tf.h
> @@ -40,5 +40,5 @@ typedef enum tf_subtype {
>
>  #define __BUILD_BUG_ON(condition, line) \
> -       char p##line[(condition) ? 1 : -1]
> +       static __rte_unused char p##line[(condition) ? 1 : -1]
>
> > Bugzilla ID: 468
> > Fixes: 8430a8b841c8 ("net/bnxt: add initial TruFlow core session open")
> > Signed-off-by: Randy Schacher <stuart.schacher at broadcom.com>
> > Reviewed-by: Peter Spreadborough <peter.spreadborough at broadcom.com>
> > Reviewed-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
> > ---
> >  drivers/net/bnxt/tf_core/hwrm_tf.h | 24 ------------------------
> >  1 file changed, 24 deletions(-)
> >
> > diff --git a/drivers/net/bnxt/tf_core/hwrm_tf.h
> b/drivers/net/bnxt/tf_core/hwrm_tf.h
> > index 6299d588a..341909573 100644
> > --- a/drivers/net/bnxt/tf_core/hwrm_tf.h
> > +++ b/drivers/net/bnxt/tf_core/hwrm_tf.h
> > @@ -38,11 +38,6 @@ typedef enum tf_subtype {
> >  /* u32_t     tlv_resp_value[170]; */
> >  #define TF_MAX_RESP_SIZE 680
> >
> > -#define __BUILD_BUG_ON(condition, line) \
> > -     char p##line[(condition) ? 1 : -1]
> > -#define _BUILD_BUG_ON(condition, line) __BUILD_BUG_ON(condition, line)
> > -#define BUILD_BUG_ON(condition) _BUILD_BUG_ON(condition, __LINE__)
> > -
> >  /* Use this to allocate/free any kind of
> >   * indexes over HWRM and fill the parms pointer
> >   */
> > @@ -98,7 +93,6 @@ typedef struct tf_session_attach_input {
> >       /* Session Name */
> >       char                             session_name[TF_SESSION_NAME_MAX];
> >  } tf_session_attach_input_t, *ptf_session_attach_input_t;
> > -BUILD_BUG_ON(sizeof(tf_session_attach_input_t) <= TF_MAX_REQ_SIZE);
> >
> >  /* Input params for session resource HW qcaps */
> >  typedef struct tf_session_hw_resc_qcaps_input {
> > @@ -111,7 +105,6 @@ typedef struct tf_session_hw_resc_qcaps_input {
> >       /* When set to 1, indicates the query apply to TX */
> >  #define TF_SESSION_HW_RESC_QCAPS_INPUT_FLAGS_DIR_TX    (0x1)
> >  } tf_session_hw_resc_qcaps_input_t, *ptf_session_hw_resc_qcaps_input_t;
> > -BUILD_BUG_ON(sizeof(tf_session_hw_resc_qcaps_input_t) <=
> TF_MAX_REQ_SIZE);
> >
> >  /* Output params for session resource HW qcaps */
> >  typedef struct tf_session_hw_resc_qcaps_output {
> > @@ -216,7 +209,6 @@ typedef struct tf_session_hw_resc_qcaps_output {
> >       /* Maximum non-guaranteed number of LAG table entries */
> >       uint16_t                         lag_tbl_entries_max;
> >  } tf_session_hw_resc_qcaps_output_t,
> *ptf_session_hw_resc_qcaps_output_t;
> > -BUILD_BUG_ON(sizeof(tf_session_hw_resc_qcaps_output_t) <=
> TF_MAX_RESP_SIZE);
> >
> >  /* Input params for session resource HW alloc */
> >  typedef struct tf_session_hw_resc_alloc_input {
> > @@ -275,7 +267,6 @@ typedef struct tf_session_hw_resc_alloc_input {
> >       /* Number of LAG table entries to be allocated */
> >       uint16_t                         num_lag_tbl_entries;
> >  } tf_session_hw_resc_alloc_input_t, *ptf_session_hw_resc_alloc_input_t;
> > -BUILD_BUG_ON(sizeof(tf_session_hw_resc_alloc_input_t) <=
> TF_MAX_REQ_SIZE);
> >
> >  /* Output params for session resource HW alloc */
> >  typedef struct tf_session_hw_resc_alloc_output {
> > @@ -368,7 +359,6 @@ typedef struct tf_session_hw_resc_alloc_output {
> >       /* Number of LAG table entries allocated */
> >       uint16_t                         lag_tbl_entries_stride;
> >  } tf_session_hw_resc_alloc_output_t,
> *ptf_session_hw_resc_alloc_output_t;
> > -BUILD_BUG_ON(sizeof(tf_session_hw_resc_alloc_output_t) <=
> TF_MAX_RESP_SIZE);
> >
> >  /* Input params for session resource HW free */
> >  typedef struct tf_session_hw_resc_free_input {
> > @@ -471,7 +461,6 @@ typedef struct tf_session_hw_resc_free_input {
> >       /* Number of LAG table entries allocated */
> >       uint16_t                         lag_tbl_entries_stride;
> >  } tf_session_hw_resc_free_input_t, *ptf_session_hw_resc_free_input_t;
> > -BUILD_BUG_ON(sizeof(tf_session_hw_resc_free_input_t) <=
> TF_MAX_REQ_SIZE);
> >
> >  /* Input params for session resource HW flush */
> >  typedef struct tf_session_hw_resc_flush_input {
> > @@ -574,7 +563,6 @@ typedef struct tf_session_hw_resc_flush_input {
> >       /* Number of LAG table entries allocated */
> >       uint16_t                         lag_tbl_entries_stride;
> >  } tf_session_hw_resc_flush_input_t, *ptf_session_hw_resc_flush_input_t;
> > -BUILD_BUG_ON(sizeof(tf_session_hw_resc_flush_input_t) <=
> TF_MAX_REQ_SIZE);
> >
> >  /* Input params for session resource SRAM qcaps */
> >  typedef struct tf_session_sram_resc_qcaps_input {
> > @@ -587,7 +575,6 @@ typedef struct tf_session_sram_resc_qcaps_input {
> >       /* When set to 1, indicates the query apply to TX */
> >  #define TF_SESSION_SRAM_RESC_QCAPS_INPUT_FLAGS_DIR_TX          (0x1)
> >  } tf_session_sram_resc_qcaps_input_t,
> *ptf_session_sram_resc_qcaps_input_t;
> > -BUILD_BUG_ON(sizeof(tf_session_sram_resc_qcaps_input_t) <=
> TF_MAX_REQ_SIZE);
> >
> >  /* Output params for session resource SRAM qcaps */
> >  typedef struct tf_session_sram_resc_qcaps_output {
> > @@ -654,7 +641,6 @@ typedef struct tf_session_sram_resc_qcaps_output {
> >       /* Maximum non-guaranteed number of NAT D_IPV4 */
> >       uint16_t                         nat_d_ipv4_max;
> >  } tf_session_sram_resc_qcaps_output_t,
> *ptf_session_sram_resc_qcaps_output_t;
> > -BUILD_BUG_ON(sizeof(tf_session_sram_resc_qcaps_output_t) <=
> TF_MAX_RESP_SIZE);
> >
> >  /* Input params for session resource SRAM alloc */
> >  typedef struct tf_session_sram_resc_alloc_input {
> > @@ -695,7 +681,6 @@ typedef struct tf_session_sram_resc_alloc_input {
> >       /* Number of NAT destination IPV4 addresses to be allocated */
> >       uint16_t                         num_nat_d_ipv4;
> >  } tf_session_sram_resc_alloc_input_t,
> *ptf_session_sram_resc_alloc_input_t;
> > -BUILD_BUG_ON(sizeof(tf_session_sram_resc_alloc_input_t) <=
> TF_MAX_REQ_SIZE);
> >
> >  /* Output params for session resource SRAM alloc */
> >  typedef struct tf_session_sram_resc_alloc_output {
> > @@ -757,7 +742,6 @@ typedef struct tf_session_sram_resc_alloc_output {
> >       /* Number of NAT destination IPV4 addresses allocated */
> >       uint16_t                         nat_d_ipv4_stride;
> >  } tf_session_sram_resc_alloc_output_t,
> *ptf_session_sram_resc_alloc_output_t;
> > -BUILD_BUG_ON(sizeof(tf_session_sram_resc_alloc_output_t) <=
> TF_MAX_RESP_SIZE);
> >
> >  /* Input params for session resource SRAM free */
> >  typedef struct tf_session_sram_resc_free_input {
> > @@ -825,7 +809,6 @@ typedef struct tf_session_sram_resc_free_input {
> >       /* Number of NAT destination IPV4 addresses allocated */
> >       uint16_t                         nat_d_ipv4_stride;
> >  } tf_session_sram_resc_free_input_t,
> *ptf_session_sram_resc_free_input_t;
> > -BUILD_BUG_ON(sizeof(tf_session_sram_resc_free_input_t) <=
> TF_MAX_REQ_SIZE);
> >
> >  /* Input params for session resource SRAM flush */
> >  typedef struct tf_session_sram_resc_flush_input {
> > @@ -893,7 +876,6 @@ typedef struct tf_session_sram_resc_flush_input {
> >       /* Number of NAT destination IPV4 addresses allocated */
> >       uint16_t                         nat_d_ipv4_stride;
> >  } tf_session_sram_resc_flush_input_t,
> *ptf_session_sram_resc_flush_input_t;
> > -BUILD_BUG_ON(sizeof(tf_session_sram_resc_flush_input_t) <=
> TF_MAX_REQ_SIZE);
> >
> >  /* Input params for table type set */
> >  typedef struct tf_tbl_type_set_input {
> > @@ -914,7 +896,6 @@ typedef struct tf_tbl_type_set_input {
> >       /* Index to set */
> >       uint32_t                         index;
> >  } tf_tbl_type_set_input_t, *ptf_tbl_type_set_input_t;
> > -BUILD_BUG_ON(sizeof(tf_tbl_type_set_input_t) <= TF_MAX_REQ_SIZE);
> >
> >  /* Input params for table type get */
> >  typedef struct tf_tbl_type_get_input {
> > @@ -931,7 +912,6 @@ typedef struct tf_tbl_type_get_input {
> >       /* Index to get */
> >       uint32_t                         index;
> >  } tf_tbl_type_get_input_t, *ptf_tbl_type_get_input_t;
> > -BUILD_BUG_ON(sizeof(tf_tbl_type_get_input_t) <= TF_MAX_REQ_SIZE);
> >
> >  /* Output params for table type get */
> >  typedef struct tf_tbl_type_get_output {
> > @@ -940,7 +920,6 @@ typedef struct tf_tbl_type_get_output {
> >       /* Data read */
> >       uint8_t                   data[TF_BULK_RECV];
> >  } tf_tbl_type_get_output_t, *ptf_tbl_type_get_output_t;
> > -BUILD_BUG_ON(sizeof(tf_tbl_type_get_output_t) <= TF_MAX_RESP_SIZE);
> >
> >  /* Input params for EM internal rule insert */
> >  typedef struct tf_em_internal_insert_input {
> > @@ -963,7 +942,6 @@ typedef struct tf_em_internal_insert_input {
> >       /* number of bits in em_key */
> >       uint16_t                         em_key_bitlen;
> >  } tf_em_internal_insert_input_t, *ptf_em_internal_insert_input_t;
> > -BUILD_BUG_ON(sizeof(tf_em_internal_insert_input_t) <= TF_MAX_REQ_SIZE);
> >
> >  /* Output params for EM internal rule insert */
> >  typedef struct tf_em_internal_insert_output {
> > @@ -972,7 +950,6 @@ typedef struct tf_em_internal_insert_output {
> >       /* EM record offset 0~3 */
> >       uint8_t                   rptr_entry;
> >  } tf_em_internal_insert_output_t, *ptf_em_internal_insert_output_t;
> > -BUILD_BUG_ON(sizeof(tf_em_internal_insert_output_t) <=
> TF_MAX_RESP_SIZE);
> >
> >  /* Input params for EM INTERNAL rule delete */
> >  typedef struct tf_em_internal_delete_input {
> > @@ -991,6 +968,5 @@ typedef struct tf_em_internal_delete_input {
> >       /* number of bits in em_key */
> >       uint16_t                         em_key_bitlen;
> >  } tf_em_internal_delete_input_t, *ptf_em_internal_delete_input_t;
> > -BUILD_BUG_ON(sizeof(tf_em_internal_delete_input_t) <= TF_MAX_REQ_SIZE);
> >
> >  #endif /* _HWRM_TF_H_ */
> >
>
>